651224042 has 32 divisors (see below), whose sum is σ = 1134673920. Its totient is φ = 274561200.

The previous prime is 651224039. The next prime is 651224051. The reversal of 651224042 is 240422156.

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, 224759 + ... + 227637.

It is an arithmetic number, because the mean of its divisors is an integer number (35458560).

Almost surely, 2^651224042 is an apocalyptic number.

651224042 is a deficient number, since it is larger than the sum of its proper divisors (483449878).

651224042 is a wasteful number, since it uses less digits than its factorization.

651224042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3146.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 651224042 is about 25519.0917158115. The cubic root of 651224042 is about 866.7825146585.

Adding to 651224042 its reverse (240422156), we get a palindrome (891646198).

The spelling of 651224042 in words is "six hundred fifty-one million, two hundred twenty-four thousand, forty-two".