126354621 has 4 divisors (see below), whose sum is σ = 168472832. Its totient is φ = 84236412.

The previous prime is 126354589. The next prime is 126354623. The reversal of 126354621 is 126453621.

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.

It is not a de Polignac number, because 126354621 - 2⁵ = 126354589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126354623) 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, 21059101 + ... + 21059106.

It is an arithmetic number, because the mean of its divisors is an integer number (42118208).

Almost surely, 2^126354621 is an apocalyptic number.

It is an amenable number.

126354621 is a deficient number, since it is larger than the sum of its proper divisors (42118211).

126354621 is an equidigital number, since it uses as much as digits as its factorization.

126354621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42118210.

The product of its digits is 8640, while the sum is 30.

The square root of 126354621 is about 11240.7571364210. The cubic root of 126354621 is about 501.7996758949.

The spelling of 126354621 in words is "one hundred twenty-six million, three hundred fifty-four thousand, six hundred twenty-one".