642212074 has 32 divisors (see below), whose sum is σ = 1123943040. Its totient is φ = 269541888.

The previous prime is 642212059. The next prime is 642212099. The reversal of 642212074 is 470212246.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130914 + ... + 135730.

It is an arithmetic number, because the mean of its divisors is an integer number (35123220).

Almost surely, 2^642212074 is an apocalyptic number.

642212074 is a deficient number, since it is larger than the sum of its proper divisors (481730966).

642212074 is a wasteful number, since it uses less digits than its factorization.

642212074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5022.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 642212074 is about 25341.9035196648. The cubic root of 642212074 is about 862.7656028325.

It can be divided in two parts, 6422 and 12074, that added together give a square (18496 = 136²).

The spelling of 642212074 in words is "six hundred forty-two million, two hundred twelve thousand, seventy-four".