145621130 has 32 divisors (see below), whose sum is σ = 279720000. Its totient is φ = 54421632.

The previous prime is 145621123. The next prime is 145621139. The reversal of 145621130 is 31126541.

It is a junction number, because it is equal to n+sod(n) for n = 145621096 and 145621105.

It is not an unprimeable number, because it can be changed into a prime (145621139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8621 + ... + 19119.

It is an arithmetic number, because the mean of its divisors is an integer number (8741250).

Almost surely, 2^145621130 is an apocalyptic number.

145621130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145621130 is a deficient number, since it is larger than the sum of its proper divisors (134098870).

145621130 is a wasteful number, since it uses less digits than its factorization.

145621130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10598.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 145621130 is about 12067.3580372839. The cubic root of 145621130 is about 526.1078706225.

Adding to 145621130 its reverse (31126541), we get a palindrome (176747671).

The spelling of 145621130 in words is "one hundred forty-five million, six hundred twenty-one thousand, one hundred thirty".