247023742 has 8 divisors (see below), whose sum is σ = 423469296. Its totient is φ = 105867312.

The previous prime is 247023739. The next prime is 247023743. The reversal of 247023742 is 247320742.

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

It is a super-2 number, since 2×247023742² = 122041458223365128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247023743) 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, 8822263 + ... + 8822290.

It is an arithmetic number, because the mean of its divisors is an integer number (52933662).

Almost surely, 2^247023742 is an apocalyptic number.

247023742 is a deficient number, since it is larger than the sum of its proper divisors (176445554).

247023742 is a wasteful number, since it uses less digits than its factorization.

247023742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17644562.

The product of its (nonzero) digits is 18816, while the sum is 31.

The square root of 247023742 is about 15716.9889609938. The cubic root of 247023742 is about 627.4506382762.

The spelling of 247023742 in words is "two hundred forty-seven million, twenty-three thousand, seven hundred forty-two".