87842434 has 16 divisors (see below), whose sum is σ = 146858400. Its totient is φ = 39161664.

The previous prime is 87842429. The next prime is 87842449. The reversal of 87842434 is 43424878.

It is a super-2 number, since 2×87842434² = 15432586422088712, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67344 + ... + 68635.

It is an arithmetic number, because the mean of its divisors is an integer number (9178650).

Almost surely, 2^87842434 is an apocalyptic number.

87842434 is a deficient number, since it is larger than the sum of its proper divisors (59015966).

87842434 is a wasteful number, since it uses less digits than its factorization.

87842434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136017.

The product of its digits is 172032, while the sum is 40.

The square root of 87842434 is about 9372.4294609242. The cubic root of 87842434 is about 444.5303870514.

The spelling of 87842434 in words is "eighty-seven million, eight hundred forty-two thousand, four hundred thirty-four".