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145430405142 = 23112203490987
BaseRepresentation
bin1000011101110001010…
…0111110000000010110
3111220101021222001011120
42013130110332000112
54340320140431032
6150450530144410
713335621022161
oct2073424760026
9456337861146
10145430405142
1156749743980
1224228422106
1310938949689
14707892aad8
153bb284562c
hex21dc53e016

145430405142 has 16 divisors (see below), whose sum is σ = 317302702272. Its totient is φ = 44069819720.

The previous prime is 145430405129. The next prime is 145430405149. The reversal of 145430405142 is 241504034541.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145430405149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1101745428 + ... + 1101745559.

It is an arithmetic number, because the mean of its divisors is an integer number (19831418892).

Almost surely, 2145430405142 is an apocalyptic number.

145430405142 is an abundant number, since it is smaller than the sum of its proper divisors (171872297130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145430405142 is a wasteful number, since it uses less digits than its factorization.

145430405142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203491003.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 145430405142 its reverse (241504034541), we get a palindrome (386934439683).

The spelling of 145430405142 in words is "one hundred forty-five billion, four hundred thirty million, four hundred five thousand, one hundred forty-two".

Divisors: 1 2 3 6 11 22 33 66 2203490987 4406981974 6610472961 13220945922 24238400857 48476801714 72715202571 145430405142