42153131 has 2 divisors, whose sum is σ = 42153132. Its totient is φ = 42153130.

The previous prime is 42153121. The next prime is 42153157. The reversal of 42153131 is 13135124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42153131 - 2¹⁰ = 42152107 is a prime.

It is a super-2 number, since 2×42153131² = 3553772906206322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42153121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21076565 + 21076566.

It is an arithmetic number, because the mean of its divisors is an integer number (21076566).

Almost surely, 2^42153131 is an apocalyptic number.

42153131 is a deficient number, since it is larger than the sum of its proper divisors (1).

42153131 is an equidigital number, since it uses as much as digits as its factorization.

42153131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 20.

The square root of 42153131 is about 6492.5442624598. The cubic root of 42153131 is about 348.0246024576.

Adding to 42153131 its reverse (13135124), we get a palindrome (55288255).

The spelling of 42153131 in words is "forty-two million, one hundred fifty-three thousand, one hundred thirty-one".