42345157 has 2 divisors, whose sum is σ = 42345158. Its totient is φ = 42345156.

The previous prime is 42345097. The next prime is 42345197. The reversal of 42345157 is 75154324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39955041 + 2390116 = 6321^2 + 1546^2 .

It is a cyclic number.

It is not a de Polignac number, because 42345157 - 2⁷ = 42345029 is a prime.

It is a super-2 number, since 2×42345157² = 3586224642709298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42345197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21172578 + 21172579.

It is an arithmetic number, because the mean of its divisors is an integer number (21172579).

Almost surely, 2^42345157 is an apocalyptic number.

It is an amenable number.

42345157 is a deficient number, since it is larger than the sum of its proper divisors (1).

42345157 is an equidigital number, since it uses as much as digits as its factorization.

42345157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 31.

The square root of 42345157 is about 6507.3156524023. The cubic root of 42345157 is about 348.5522702499.

The spelling of 42345157 in words is "forty-two million, three hundred forty-five thousand, one hundred fifty-seven".