126642419 has 2 divisors, whose sum is σ = 126642420. Its totient is φ = 126642418.

The previous prime is 126642337. The next prime is 126642421. The reversal of 126642419 is 914246621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126642419 is a prime.

It is a super-2 number, since 2×126642419² = 32076604580343122, which contains 22 as substring.

Together with 126642421, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126642499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63321209 + 63321210.

It is an arithmetic number, because the mean of its divisors is an integer number (63321210).

Almost surely, 2^126642419 is an apocalyptic number.

126642419 is a deficient number, since it is larger than the sum of its proper divisors (1).

126642419 is an equidigital number, since it uses as much as digits as its factorization.

126642419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 35.

The square root of 126642419 is about 11253.5513950042. The cubic root of 126642419 is about 502.1803701513.

The spelling of 126642419 in words is "one hundred twenty-six million, six hundred forty-two thousand, four hundred nineteen".