126718953 has 4 divisors (see below), whose sum is σ = 168958608. Its totient is φ = 84479300.

The previous prime is 126718927. The next prime is 126718967. The reversal of 126718953 is 359817621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 359817621 = 3 ⋅119939207.

It is a cyclic number.

It is not a de Polignac number, because 126718953 - 2¹³ = 126710761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126718973) 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, 21119823 + ... + 21119828.

It is an arithmetic number, because the mean of its divisors is an integer number (42239652).

Almost surely, 2^126718953 is an apocalyptic number.

It is an amenable number.

126718953 is a deficient number, since it is larger than the sum of its proper divisors (42239655).

126718953 is an equidigital number, since it uses as much as digits as its factorization.

126718953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42239654.

The product of its digits is 90720, while the sum is 42.

The square root of 126718953 is about 11256.9513190739. The cubic root of 126718953 is about 502.2815109147.

The spelling of 126718953 in words is "one hundred twenty-six million, seven hundred eighteen thousand, nine hundred fifty-three".