1370121457 has 2 divisors, whose sum is σ = 1370121458. Its totient is φ = 1370121456.

The previous prime is 1370121449. The next prime is 1370121479. The reversal of 1370121457 is 7541210731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1220524096 + 149597361 = 34936^2 + 12231^2 .

It is a cyclic number.

It is not a de Polignac number, because 1370121457 - 2³ = 1370121449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1370121157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685060728 + 685060729.

It is an arithmetic number, because the mean of its divisors is an integer number (685060729).

Almost surely, 2^1370121457 is an apocalyptic number.

It is an amenable number.

1370121457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1370121457 is an equidigital number, since it uses as much as digits as its factorization.

1370121457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 1370121457 is about 37015.1517219638. The cubic root of 1370121457 is about 1110.6733616913.

The spelling of 1370121457 in words is "one billion, three hundred seventy million, one hundred twenty-one thousand, four hundred fifty-seven".