126031819 has 2 divisors, whose sum is σ = 126031820. Its totient is φ = 126031818.

The previous prime is 126031813. The next prime is 126031831. The reversal of 126031819 is 918130621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126031819 - 2³ = 126031811 is a prime.

It is a super-2 number, since 2×126031819² = 31768038800897522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126031811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63015909 + 63015910.

It is an arithmetic number, because the mean of its divisors is an integer number (63015910).

Almost surely, 2^126031819 is an apocalyptic number.

126031819 is a deficient number, since it is larger than the sum of its proper divisors (1).

126031819 is an equidigital number, since it uses as much as digits as its factorization.

126031819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 126031819 is about 11226.3894017623. The cubic root of 126031819 is about 501.3719905073.

The spelling of 126031819 in words is "one hundred twenty-six million, thirty-one thousand, eight hundred nineteen".