247748942 has 16 divisors (see below), whose sum is σ = 447066240. Its totient is φ = 100589688.

The previous prime is 247748911. The next prime is 247748953. The reversal of 247748942 is 249847742.

247748942 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 2×247748942² = 122759076524238728, 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 in 7 ways as a sum of consecutive naturals, for example, 465428 + ... + 465959.

It is an arithmetic number, because the mean of its divisors is an integer number (27941640).

Almost surely, 2^247748942 is an apocalyptic number.

247748942 is a deficient number, since it is larger than the sum of its proper divisors (199317298).

247748942 is a wasteful number, since it uses less digits than its factorization.

247748942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931415.

The product of its digits is 903168, while the sum is 47.

The square root of 247748942 is about 15740.0426301837. The cubic root of 247748942 is about 628.0640511705.

The spelling of 247748942 in words is "two hundred forty-seven million, seven hundred forty-eight thousand, nine hundred forty-two".