42402042407 has 2 divisors, whose sum is σ = 42402042408. Its totient is φ = 42402042406.

The previous prime is 42402042401. The next prime is 42402042433. The reversal of 42402042407 is 70424020424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42402042407 - 2¹² = 42402038311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42402042407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42402042401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21201021203 + 21201021204.

It is an arithmetic number, because the mean of its divisors is an integer number (21201021204).

Almost surely, 2^42402042407 is an apocalyptic number.

42402042407 is a deficient number, since it is larger than the sum of its proper divisors (1).

42402042407 is an equidigital number, since it uses as much as digits as its factorization.

42402042407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14336, while the sum is 29.

The spelling of 42402042407 in words is "forty-two billion, four hundred two million, forty-two thousand, four hundred seven".