1975420127 has 2 divisors, whose sum is σ = 1975420128. Its totient is φ = 1975420126.

The previous prime is 1975420091. The next prime is 1975420141. The reversal of 1975420127 is 7210245791.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1975420127 - 2²⁶ = 1908311263 is a prime.

It is a super-2 number, since 2×1975420127² = 7804569356313392258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1975420147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 987710063 + 987710064.

It is an arithmetic number, because the mean of its divisors is an integer number (987710064).

Almost surely, 2^1975420127 is an apocalyptic number.

1975420127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1975420127 is an equidigital number, since it uses as much as digits as its factorization.

1975420127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 1975420127 is about 44445.6986332761. The cubic root of 1975420127 is about 1254.7383098012.

The spelling of 1975420127 in words is "one billion, nine hundred seventy-five million, four hundred twenty thousand, one hundred twenty-seven".