126748404 has 18 divisors (see below), whose sum is σ = 320391890. Its totient is φ = 42249456.

The previous prime is 126748403. The next prime is 126748409. The reversal of 126748404 is 404847621.

It can be written as a sum of positive squares in only one way, i.e., 72284004 + 54464400 = 8502^2 + 7380^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3520789 = 126748404 / (1 + 2 + 6 + 7 + 4 + 8 + 4 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126748403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1760359 + ... + 1760430.

Almost surely, 2^126748404 is an apocalyptic number.

It is an amenable number.

126748404 is an abundant number, since it is smaller than the sum of its proper divisors (193643486).

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

126748404 is a wasteful number, since it uses less digits than its factorization.

126748404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3520799 (or 3520794 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 126748404 is about 11258.2593681261. The cubic root of 126748404 is about 502.3204199770.

The spelling of 126748404 in words is "one hundred twenty-six million, seven hundred forty-eight thousand, four hundred four".