101987492 has 6 divisors (see below), whose sum is σ = 178478118. Its totient is φ = 50993744.

The previous prime is 101987447. The next prime is 101987507. The reversal of 101987492 is 294789101.

It can be written as a sum of positive squares in only one way, i.e., 65674816 + 36312676 = 8104^2 + 6026^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12748433 + ... + 12748440.

It is an arithmetic number, because the mean of its divisors is an integer number (29746353).

Almost surely, 2^101987492 is an apocalyptic number.

It is an amenable number.

101987492 is a deficient number, since it is larger than the sum of its proper divisors (76490626).

101987492 is a wasteful number, since it uses less digits than its factorization.

101987492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25496877 (or 25496875 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 101987492 is about 10098.8856811036. The cubic root of 101987492 is about 467.2137735294.

The spelling of 101987492 in words is "one hundred one million, nine hundred eighty-seven thousand, four hundred ninety-two".