861625342 has 4 divisors (see below), whose sum is σ = 1292438016. Its totient is φ = 430812670.

The previous prime is 861625307. The next prime is 861625361. The reversal of 861625342 is 243526168.

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

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, 215406334 + ... + 215406337.

It is an arithmetic number, because the mean of its divisors is an integer number (323109504).

Almost surely, 2^861625342 is an apocalyptic number.

861625342 is a deficient number, since it is larger than the sum of its proper divisors (430812674).

861625342 is a wasteful number, since it uses less digits than its factorization.

861625342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430812673.

The product of its digits is 69120, while the sum is 37.

The square root of 861625342 is about 29353.4553672988. The cubic root of 861625342 is about 951.5672530918.

The spelling of 861625342 in words is "eight hundred sixty-one million, six hundred twenty-five thousand, three hundred forty-two".