126440473 has 2 divisors, whose sum is σ = 126440474. Its totient is φ = 126440472.

The previous prime is 126440467. The next prime is 126440477. The reversal of 126440473 is 374044621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124612569 + 1827904 = 11163^2 + 1352^2 .

It is a cyclic number.

It is not a de Polignac number, because 126440473 - 2⁹ = 126439961 is a prime.

It is not a weakly prime, because it can be changed into another prime (126440477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63220236 + 63220237.

It is an arithmetic number, because the mean of its divisors is an integer number (63220237).

Almost surely, 2^126440473 is an apocalyptic number.

It is an amenable number.

126440473 is a deficient number, since it is larger than the sum of its proper divisors (1).

126440473 is an equidigital number, since it uses as much as digits as its factorization.

126440473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 126440473 is about 11244.5752698801. The cubic root of 126440473 is about 501.9132998950.

The spelling of 126440473 in words is "one hundred twenty-six million, four hundred forty thousand, four hundred seventy-three".