42116051 has 2 divisors, whose sum is σ = 42116052. Its totient is φ = 42116050.

The previous prime is 42116017. The next prime is 42116069. The reversal of 42116051 is 15061124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42116051 - 2¹⁰ = 42115027 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_2554220 and since 42116051 and 2554220 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (42116071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21058025 + 21058026.

It is an arithmetic number, because the mean of its divisors is an integer number (21058026).

Almost surely, 2^42116051 is an apocalyptic number.

42116051 is a deficient number, since it is larger than the sum of its proper divisors (1).

42116051 is an equidigital number, since it uses as much as digits as its factorization.

42116051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 42116051 is about 6489.6880510545. The cubic root of 42116051 is about 347.9225259120.

Adding to 42116051 its reverse (15061124), we get a palindrome (57177175).

The spelling of 42116051 in words is "forty-two million, one hundred sixteen thousand, fifty-one".