42670421249 has 2 divisors, whose sum is σ = 42670421250. Its totient is φ = 42670421248.

The previous prime is 42670421239. The next prime is 42670421251. The reversal of 42670421249 is 94212407624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42590640625 + 79780624 = 206375^2 + 8932^2 .

It is a cyclic number.

It is not a de Polignac number, because 42670421249 - 2³² = 38375453953 is a prime.

It is a super-2 number, since 2×42670421249² (a number of 22 digits) contains 22 as substring.

Together with 42670421251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42670421239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21335210624 + 21335210625.

It is an arithmetic number, because the mean of its divisors is an integer number (21335210625).

Almost surely, 2^42670421249 is an apocalyptic number.

It is an amenable number.

42670421249 is a deficient number, since it is larger than the sum of its proper divisors (1).

42670421249 is an equidigital number, since it uses as much as digits as its factorization.

42670421249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 42670421249 in words is "forty-two billion, six hundred seventy million, four hundred twenty-one thousand, two hundred forty-nine".