42402042401 has 2 divisors, whose sum is σ = 42402042402. Its totient is φ = 42402042400.

The previous prime is 42402042377. The next prime is 42402042407. The reversal of 42402042401 is 10424020424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28419216400 + 13982826001 = 168580^2 + 118249^2 .

It is a cyclic number.

It is not a de Polignac number, because 42402042401 - 2¹⁰ = 42402041377 is a prime.

It is not a weakly prime, because it can be changed into another prime (42402042407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21201021200 + 21201021201.

It is an arithmetic number, because the mean of its divisors is an integer number (21201021201).

Almost surely, 2^42402042401 is an apocalyptic number.

It is an amenable number.

42402042401 is a deficient number, since it is larger than the sum of its proper divisors (1).

42402042401 is an equidigital number, since it uses as much as digits as its factorization.

42402042401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 42402042401 its reverse (10424020424), we get a palindrome (52826062825).

The spelling of 42402042401 in words is "forty-two billion, four hundred two million, forty-two thousand, four hundred one".