247942502 has 4 divisors (see below), whose sum is σ = 371913756. Its totient is φ = 123971250.

The previous prime is 247942483. The next prime is 247942511. The reversal of 247942502 is 205249742.

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

It is a super-2 number, since 2×247942502² = 122950968596040008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61985624 + ... + 61985627.

It is an arithmetic number, because the mean of its divisors is an integer number (92978439).

Almost surely, 2^247942502 is an apocalyptic number.

247942502 is a deficient number, since it is larger than the sum of its proper divisors (123971254).

247942502 is a wasteful number, since it uses less digits than its factorization.

247942502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123971253.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 247942502 is about 15746.1900788730. The cubic root of 247942502 is about 628.2275721273.

The spelling of 247942502 in words is "two hundred forty-seven million, nine hundred forty-two thousand, five hundred two".