126640453 has 8 divisors (see below), whose sum is σ = 135492320. Its totient is φ = 118007280.

The previous prime is 126640441. The next prime is 126640469. The reversal of 126640453 is 354046621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126640453 - 2¹⁷ = 126509381 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 (126640403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53475 + ... + 55792.

It is an arithmetic number, because the mean of its divisors is an integer number (16936540).

Almost surely, 2^126640453 is an apocalyptic number.

It is an amenable number.

126640453 is a deficient number, since it is larger than the sum of its proper divisors (8851867).

126640453 is a wasteful number, since it uses less digits than its factorization.

126640453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109347.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 126640453 is about 11253.4640444620. The cubic root of 126640453 is about 502.1777715178.

The spelling of 126640453 in words is "one hundred twenty-six million, six hundred forty thousand, four hundred fifty-three".