86424642 has 12 divisors (see below), whose sum is σ = 187253430. Its totient is φ = 28808208.

The previous prime is 86424629. The next prime is 86424647. The reversal of 86424642 is 24642468.

It is a happy number.

86424642 is a `hidden beast` number, since 8 + 6 + 4 + 2 + 4 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 84658401 + 1766241 = 9201^2 + 1329^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 86424597 and 86424606.

It is not an unprimeable number, because it can be changed into a prime (86424647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2400667 + ... + 2400702.

Almost surely, 2^86424642 is an apocalyptic number.

86424642 is an abundant number, since it is smaller than the sum of its proper divisors (100828788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86424642 is a wasteful number, since it uses less digits than its factorization.

86424642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4801377 (or 4801374 counting only the distinct ones).

The product of its digits is 73728, while the sum is 36.

The square root of 86424642 is about 9296.4854649486. The cubic root of 86424642 is about 442.1258045012.

The spelling of 86424642 in words is "eighty-six million, four hundred twenty-four thousand, six hundred forty-two".