39247742 has 8 divisors (see below), whose sum is σ = 60307632. Its totient is φ = 19145200.

The previous prime is 39247723. The next prime is 39247799. The reversal of 39247742 is 24774293.

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

It is a junction number, because it is equal to n+sod(n) for n = 39247696 and 39247705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239234 + ... + 239397.

It is an arithmetic number, because the mean of its divisors is an integer number (7538454).

Almost surely, 2^39247742 is an apocalyptic number.

39247742 is a deficient number, since it is larger than the sum of its proper divisors (21059890).

39247742 is a wasteful number, since it uses less digits than its factorization.

39247742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478674.

The product of its digits is 84672, while the sum is 38.

The square root of 39247742 is about 6264.8018324605. The cubic root of 39247742 is about 339.8377022402.

The spelling of 39247742 in words is "thirty-nine million, two hundred forty-seven thousand, seven hundred forty-two".