126821454 has 16 divisors (see below), whose sum is σ = 253870848. Its totient is φ = 42235832.

The previous prime is 126821399. The next prime is 126821467. The reversal of 126821454 is 454128621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1782 + ... + 16025.

It is an arithmetic number, because the mean of its divisors is an integer number (15866928).

Almost surely, 2^126821454 is an apocalyptic number.

126821454 is an abundant number, since it is smaller than the sum of its proper divisors (127049394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126821454 is a wasteful number, since it uses less digits than its factorization.

126821454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18999.

The product of its digits is 15360, while the sum is 33.

The square root of 126821454 is about 11261.5031856320. The cubic root of 126821454 is about 502.4169036625.

It can be divided in two parts, 1268 and 21454, that added together give a palindrome (22722).

The spelling of 126821454 in words is "one hundred twenty-six million, eight hundred twenty-one thousand, four hundred fifty-four".