712220042 has 16 divisors (see below), whose sum is σ = 1089578952. Its totient is φ = 349040640.

The previous prime is 712220029. The next prime is 712220053. The reversal of 712220042 is 240022217.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 563160361 + 149059681 = 23731^2 + 12209^2 .

It is a junction number, because it is equal to n+sod(n) for n = 712219996 and 712220023.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126242 + ... + 131762.

Almost surely, 2^712220042 is an apocalyptic number.

712220042 is a deficient number, since it is larger than the sum of its proper divisors (377358910).

712220042 is a wasteful number, since it uses less digits than its factorization.

712220042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6793.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 712220042 is about 26687.4510210323. The cubic root of 712220042 is about 893.0409976049.

Adding to 712220042 its reverse (240022217), we get a palindrome (952242259).

The spelling of 712220042 in words is "seven hundred twelve million, two hundred twenty thousand, forty-two".