126381499 has 2 divisors, whose sum is σ = 126381500. Its totient is φ = 126381498.

The previous prime is 126381487. The next prime is 126381503. The reversal of 126381499 is 994183621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126381499 - 2⁹ = 126380987 is a prime.

It is not a weakly prime, because it can be changed into another prime (126381439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63190749 + 63190750.

It is an arithmetic number, because the mean of its divisors is an integer number (63190750).

Almost surely, 2^126381499 is an apocalyptic number.

126381499 is a deficient number, since it is larger than the sum of its proper divisors (1).

126381499 is an equidigital number, since it uses as much as digits as its factorization.

126381499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 43.

The square root of 126381499 is about 11241.9526328837. The cubic root of 126381499 is about 501.8352541095.

The spelling of 126381499 in words is "one hundred twenty-six million, three hundred eighty-one thousand, four hundred ninety-nine".