42142511251 has 16 divisors (see below), whose sum is σ = 42595102368. Its totient is φ = 41693184000.

The previous prime is 42142511167. The next prime is 42142511273. The reversal of 42142511251 is 15211524124.

It is a cyclic number.

It is not a de Polignac number, because 42142511251 - 2⁷ = 42142511123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42142515251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35987896 + ... + 35989066.

It is an arithmetic number, because the mean of its divisors is an integer number (2662193898).

Almost surely, 2^42142511251 is an apocalyptic number.

42142511251 is a deficient number, since it is larger than the sum of its proper divisors (452591117).

42142511251 is a wasteful number, since it uses less digits than its factorization.

42142511251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262.

The product of its digits is 3200, while the sum is 28.

The spelling of 42142511251 in words is "forty-two billion, one hundred forty-two million, five hundred eleven thousand, two hundred fifty-one".