126555437 has 2 divisors, whose sum is σ = 126555438. Its totient is φ = 126555436.

The previous prime is 126555421. The next prime is 126555487. The reversal of 126555437 is 734555621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89661961 + 36893476 = 9469^2 + 6074^2 .

It is a cyclic number.

It is not a de Polignac number, because 126555437 - 2⁴ = 126555421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126555437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126555487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63277718 + 63277719.

It is an arithmetic number, because the mean of its divisors is an integer number (63277719).

Almost surely, 2^126555437 is an apocalyptic number.

It is an amenable number.

126555437 is a deficient number, since it is larger than the sum of its proper divisors (1).

126555437 is an equidigital number, since it uses as much as digits as its factorization.

126555437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 38.

The square root of 126555437 is about 11249.6860845092. The cubic root of 126555437 is about 502.0653727238.

The spelling of 126555437 in words is "one hundred twenty-six million, five hundred fifty-five thousand, four hundred thirty-seven".