126273963 has 4 divisors (see below), whose sum is σ = 168365288. Its totient is φ = 84182640.

The previous prime is 126273919. The next prime is 126273989. The reversal of 126273963 is 369372621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 369372621 = 3 ⋅123124207.

It is not a de Polignac number, because 126273963 - 2⁶ = 126273899 is a prime.

It is a super-2 number, since 2×126273963² = 31890227463450738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126273863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21045658 + ... + 21045663.

It is an arithmetic number, because the mean of its divisors is an integer number (42091322).

Almost surely, 2^126273963 is an apocalyptic number.

126273963 is a deficient number, since it is larger than the sum of its proper divisors (42091325).

126273963 is an equidigital number, since it uses as much as digits as its factorization.

126273963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42091324.

The product of its digits is 81648, while the sum is 39.

The square root of 126273963 is about 11237.1688160319. The cubic root of 126273963 is about 501.6928791848.

The spelling of 126273963 in words is "one hundred twenty-six million, two hundred seventy-three thousand, nine hundred sixty-three".