102291994 has 32 divisors (see below), whose sum is σ = 183638016. Its totient is φ = 41783280.

The previous prime is 102291989. The next prime is 102291997. The reversal of 102291994 is 499192201.

It is not an unprimeable number, because it can be changed into a prime (102291997) 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, 157779 + ... + 158425.

It is an arithmetic number, because the mean of its divisors is an integer number (5738688).

Almost surely, 2^102291994 is an apocalyptic number.

102291994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

102291994 is a deficient number, since it is larger than the sum of its proper divisors (81346022).

102291994 is a wasteful number, since it uses less digits than its factorization.

102291994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 102291994 is about 10113.9504645811. The cubic root of 102291994 is about 467.6782951148.

It can be divided in two parts, 102291 and 994, that added together give a triangular number (103285 = T₄₅₄).

The spelling of 102291994 in words is "one hundred two million, two hundred ninety-one thousand, nine hundred ninety-four".