1012254979 has 2 divisors, whose sum is σ = 1012254980. Its totient is φ = 1012254978.

The previous prime is 1012254941. The next prime is 1012255019. The reversal of 1012254979 is 9794522101.

It is a happy number.

It is an a-pointer prime, because the next prime (1012255019) can be obtained adding 1012254979 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1012254979 - 2¹⁹ = 1011730691 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012254179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506127489 + 506127490.

It is an arithmetic number, because the mean of its divisors is an integer number (506127490).

Almost surely, 2^1012254979 is an apocalyptic number.

1012254979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012254979 is an equidigital number, since it uses as much as digits as its factorization.

1012254979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 1012254979 is about 31815.9547868675. The cubic root of 1012254979 is about 1004.0684185239.

The spelling of 1012254979 in words is "one billion, twelve million, two hundred fifty-four thousand, nine hundred seventy-nine".