42402515055031 has 2 divisors, whose sum is σ = 42402515055032. Its totient is φ = 42402515055030.

The previous prime is 42402515055023. The next prime is 42402515055049. The reversal of 42402515055031 is 13055051520424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42402515055031 - 2³ = 42402515055023 is a prime.

It is a super-2 number, since 2×42402515055031² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42402515055011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21201257527515 + 21201257527516.

It is an arithmetic number, because the mean of its divisors is an integer number (21201257527516).

Almost surely, 2^{42402515055031} is an apocalyptic number.

42402515055031 is a deficient number, since it is larger than the sum of its proper divisors (1).

42402515055031 is an equidigital number, since it uses as much as digits as its factorization.

42402515055031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 42402515055031 its reverse (13055051520424), we get a palindrome (55457566575455).

The spelling of 42402515055031 in words is "forty-two trillion, four hundred two billion, five hundred fifteen million, fifty-five thousand, thirty-one".