40142207655157 has 2 divisors, whose sum is σ = 40142207655158. Its totient is φ = 40142207655156.

The previous prime is 40142207655139. The next prime is 40142207655211. The reversal of 40142207655157 is 75155670224104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24462579673156 + 15679627982001 = 4945966^2 + 3959751^2 .

It is a cyclic number.

It is not a de Polignac number, because 40142207655157 - 2²⁷ = 40142073437429 is a prime.

It is a super-2 number, since 2×40142207655157² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40142207655157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40142207695157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20071103827578 + 20071103827579.

It is an arithmetic number, because the mean of its divisors is an integer number (20071103827579).

Almost surely, 2^{40142207655157} is an apocalyptic number.

It is an amenable number.

40142207655157 is a deficient number, since it is larger than the sum of its proper divisors (1).

40142207655157 is an equidigital number, since it uses as much as digits as its factorization.

40142207655157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352000, while the sum is 49.

The spelling of 40142207655157 in words is "forty trillion, one hundred forty-two billion, two hundred seven million, six hundred fifty-five thousand, one hundred fifty-seven".