87400942 has 4 divisors (see below), whose sum is σ = 131101416. Its totient is φ = 43700470.

The previous prime is 87400933. The next prime is 87400981. The reversal of 87400942 is 24900478.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 87400898 and 87400907.

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, 21850234 + ... + 21850237.

It is an arithmetic number, because the mean of its divisors is an integer number (32775354).

Almost surely, 2^87400942 is an apocalyptic number.

87400942 is a deficient number, since it is larger than the sum of its proper divisors (43700474).

87400942 is a wasteful number, since it uses less digits than its factorization.

87400942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43700473.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 87400942 is about 9348.8470946957. The cubic root of 87400942 is about 443.7844061929.

The spelling of 87400942 in words is "eighty-seven million, four hundred thousand, nine hundred forty-two".