145258402 has 8 divisors (see below), whose sum is σ = 220045212. Its totient is φ = 71910000.

The previous prime is 145258397. The next prime is 145258423. The reversal of 145258402 is 204852541.

It can be written as a sum of positive squares in 2 ways, for example, as 124746561 + 20511841 = 11169^2 + 4529^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×145258402² = 42200006703187208, which contains 22 as substring.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 359349 + ... + 359752.

Almost surely, 2^145258402 is an apocalyptic number.

145258402 is a deficient number, since it is larger than the sum of its proper divisors (74786810).

145258402 is a wasteful number, since it uses less digits than its factorization.

145258402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719204.

The product of its (nonzero) digits is 12800, while the sum is 31.

The square root of 145258402 is about 12052.3193618490. The cubic root of 145258402 is about 525.6706796622.

The spelling of 145258402 in words is "one hundred forty-five million, two hundred fifty-eight thousand, four hundred two".