145242733 has 2 divisors, whose sum is σ = 145242734. Its totient is φ = 145242732.

The previous prime is 145242731. The next prime is 145242751. The reversal of 145242733 is 337242541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144072009 + 1170724 = 12003^2 + 1082^2 .

It is a cyclic number.

It is not a de Polignac number, because 145242733 - 2¹ = 145242731 is a prime.

Together with 145242731, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 145242695 and 145242704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145242731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72621366 + 72621367.

It is an arithmetic number, because the mean of its divisors is an integer number (72621367).

Almost surely, 2^145242733 is an apocalyptic number.

It is an amenable number.

145242733 is a deficient number, since it is larger than the sum of its proper divisors (1).

145242733 is an equidigital number, since it uses as much as digits as its factorization.

145242733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 31.

The square root of 145242733 is about 12051.6693034617. The cubic root of 145242733 is about 525.6517776458.

The spelling of 145242733 in words is "one hundred forty-five million, two hundred forty-two thousand, seven hundred thirty-three".