126643497 has 8 divisors (see below), whose sum is σ = 176199744. Its totient is φ = 80758128.

The previous prime is 126643483. The next prime is 126643499. The reversal of 126643497 is 794346621.

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

It is not a de Polignac number, because 126643497 - 2¹⁰ = 126642473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126643499) 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, 917638 + ... + 917775.

It is an arithmetic number, because the mean of its divisors is an integer number (22024968).

Almost surely, 2^126643497 is an apocalyptic number.

It is an amenable number.

126643497 is a deficient number, since it is larger than the sum of its proper divisors (49556247).

126643497 is a wasteful number, since it uses less digits than its factorization.

126643497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835439.

The product of its digits is 217728, while the sum is 42.

The square root of 126643497 is about 11253.5992908936. The cubic root of 126643497 is about 502.1817950265.

It can be divided in two parts, 12664 and 3497, that added together give a palindrome (16161).

The spelling of 126643497 in words is "one hundred twenty-six million, six hundred forty-three thousand, four hundred ninety-seven".