402541540087 has 2 divisors, whose sum is σ = 402541540088. Its totient is φ = 402541540086.

The previous prime is 402541540021. The next prime is 402541540097. The reversal of 402541540087 is 780045145204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402541540087 is a prime.

It is a super-2 number, since 2×402541540087² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402541540007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201270770043 + 201270770044.

It is an arithmetic number, because the mean of its divisors is an integer number (201270770044).

Almost surely, 2^402541540087 is an apocalyptic number.

402541540087 is a deficient number, since it is larger than the sum of its proper divisors (1).

402541540087 is an equidigital number, since it uses as much as digits as its factorization.

402541540087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 179200, while the sum is 40.

The spelling of 402541540087 in words is "four hundred two billion, five hundred forty-one million, five hundred forty thousand, eighty-seven".