126642413 has 4 divisors (see below), whose sum is σ = 127804380. Its totient is φ = 125480448.

The previous prime is 126642337. The next prime is 126642419. The reversal of 126642413 is 314246621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314246621 = 13 ⋅24172817.

It can be written as a sum of positive squares in 2 ways, for example, as 74615044 + 52027369 = 8638^2 + 7213^2 .

It is a cyclic number.

It is not a de Polignac number, because 126642413 - 2²⁰ = 125593837 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 (126642419) 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, 580820 + ... + 581037.

It is an arithmetic number, because the mean of its divisors is an integer number (31951095).

Almost surely, 2^126642413 is an apocalyptic number.

It is an amenable number.

126642413 is a deficient number, since it is larger than the sum of its proper divisors (1161967).

126642413 is a wasteful number, since it uses less digits than its factorization.

126642413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161966.

The product of its digits is 6912, while the sum is 29.

The square root of 126642413 is about 11253.5511284216. The cubic root of 126642413 is about 502.1803622206.

The spelling of 126642413 in words is "one hundred twenty-six million, six hundred forty-two thousand, four hundred thirteen".