400120130477 has 2 divisors, whose sum is σ = 400120130478. Its totient is φ = 400120130476.

The previous prime is 400120130387. The next prime is 400120130479. The reversal of 400120130477 is 774031021004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 379183776841 + 20936353636 = 615779^2 + 144694^2 .

It is a cyclic number.

It is not a de Polignac number, because 400120130477 - 2²⁸ = 399851695021 is a prime.

It is a super-2 number, since 2×400120130477² (a number of 24 digits) contains 22 as substring.

Together with 400120130479, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400120130479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200060065238 + 200060065239.

It is an arithmetic number, because the mean of its divisors is an integer number (200060065239).

Almost surely, 2^400120130477 is an apocalyptic number.

It is an amenable number.

400120130477 is a deficient number, since it is larger than the sum of its proper divisors (1).

400120130477 is an equidigital number, since it uses as much as digits as its factorization.

400120130477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 29.

The spelling of 400120130477 in words is "four hundred billion, one hundred twenty million, one hundred thirty thousand, four hundred seventy-seven".