39513242 has 4 divisors (see below), whose sum is σ = 59269866. Its totient is φ = 19756620.

The previous prime is 39513239. The next prime is 39513247. The reversal of 39513242 is 24231593.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37319881 + 2193361 = 6109^2 + 1481^2 .

It is a super-2 number, since 2×39513242² = 3122592586701128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39513247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9878309 + ... + 9878312.

Almost surely, 2^39513242 is an apocalyptic number.

39513242 is a deficient number, since it is larger than the sum of its proper divisors (19756624).

39513242 is a wasteful number, since it uses less digits than its factorization.

39513242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19756623.

The product of its digits is 6480, while the sum is 29.

The square root of 39513242 is about 6285.9559336667. The cubic root of 39513242 is about 340.6022831075.

The spelling of 39513242 in words is "thirty-nine million, five hundred thirteen thousand, two hundred forty-two".