45239402 has 8 divisors (see below), whose sum is σ = 73079076. Its totient is φ = 20879712.

The previous prime is 45239401. The next prime is 45239423. The reversal of 45239402 is 20493254.

It can be written as a sum of positive squares in 2 ways, for example, as 43546801 + 1692601 = 6599^2 + 1301^2 .

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

It is not an unprimeable number, because it can be changed into a prime (45239401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 869963 + ... + 870014.

Almost surely, 2^45239402 is an apocalyptic number.

45239402 is a deficient number, since it is larger than the sum of its proper divisors (27839674).

45239402 is a wasteful number, since it uses less digits than its factorization.

45239402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739992.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 45239402 is about 6726.0242342709. The cubic root of 45239402 is about 356.3189761999.

The spelling of 45239402 in words is "forty-five million, two hundred thirty-nine thousand, four hundred two".