42141251051 has 4 divisors (see below), whose sum is σ = 42144576504. Its totient is φ = 42137925600.

The previous prime is 42141251029. The next prime is 42141251069. The reversal of 42141251051 is 15015214124.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42141251051 - 2³⁰ = 41067509227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42141251051.

It is not an unprimeable number, because it can be changed into a prime (42141251021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1643645 + ... + 1669086.

It is an arithmetic number, because the mean of its divisors is an integer number (10536144126).

Almost surely, 2^42141251051 is an apocalyptic number.

42141251051 is a deficient number, since it is larger than the sum of its proper divisors (3325453).

42141251051 is a wasteful number, since it uses less digits than its factorization.

42141251051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325452.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 42141251051 its reverse (15015214124), we get a palindrome (57156465175).

The spelling of 42141251051 in words is "forty-two billion, one hundred forty-one million, two hundred fifty-one thousand, fifty-one".