42102424414409 has 2 divisors, whose sum is σ = 42102424414410. Its totient is φ = 42102424414408.

The previous prime is 42102424414397. The next prime is 42102424414429. The reversal of 42102424414409 is 90441442420124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41588672349184 + 513752065225 = 6448928^2 + 716765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42102424414409 is a prime.

It is a super-2 number, since 2×42102424414409² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42102424414429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21051212207204 + 21051212207205.

It is an arithmetic number, because the mean of its divisors is an integer number (21051212207205).

Almost surely, 2^{42102424414409} is an apocalyptic number.

It is an amenable number.

42102424414409 is a deficient number, since it is larger than the sum of its proper divisors (1).

42102424414409 is an equidigital number, since it uses as much as digits as its factorization.

42102424414409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 294912, while the sum is 41.

The spelling of 42102424414409 in words is "forty-two trillion, one hundred two billion, four hundred twenty-four million, four hundred fourteen thousand, four hundred nine".