126436973 has 16 divisors (see below), whose sum is σ = 146341440. Its totient is φ = 108193536.

The previous prime is 126436931. The next prime is 126436979. The reversal of 126436973 is 379634621.

It is a cyclic number.

It is not a de Polignac number, because 126436973 - 2¹⁶ = 126371437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126436973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126436979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10538 + ... + 19076.

It is an arithmetic number, because the mean of its divisors is an integer number (9146340).

Almost surely, 2^126436973 is an apocalyptic number.

126436973 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

126436973 is a deficient number, since it is larger than the sum of its proper divisors (19904467).

126436973 is a wasteful number, since it uses less digits than its factorization.

126436973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8636.

The product of its digits is 163296, while the sum is 41.

The square root of 126436973 is about 11244.4196382028. The cubic root of 126436973 is about 501.9086686965.

The spelling of 126436973 in words is "one hundred twenty-six million, four hundred thirty-six thousand, nine hundred seventy-three".