247915142 has 32 divisors (see below), whose sum is σ = 394225920. Its totient is φ = 116756640.

The previous prime is 247915139. The next prime is 247915147. The reversal of 247915142 is 241519742.

247915142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247915142² = 122923835265760328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247915147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 508823 + ... + 509309.

It is an arithmetic number, because the mean of its divisors is an integer number (12319560).

Almost surely, 2^247915142 is an apocalyptic number.

247915142 is a deficient number, since it is larger than the sum of its proper divisors (146310778).

247915142 is a wasteful number, since it uses less digits than its factorization.

247915142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716.

The product of its digits is 20160, while the sum is 35.

The square root of 247915142 is about 15745.3212733180. The cubic root of 247915142 is about 628.2044633575.

The spelling of 247915142 in words is "two hundred forty-seven million, nine hundred fifteen thousand, one hundred forty-two".