126171772 has 6 divisors (see below), whose sum is σ = 220800608. Its totient is φ = 63085884.

The previous prime is 126171743. The next prime is 126171791. The reversal of 126171772 is 277171621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15771468 + ... + 15771475.

Almost surely, 2^126171772 is an apocalyptic number.

It is an amenable number.

126171772 is a deficient number, since it is larger than the sum of its proper divisors (94628836).

126171772 is a wasteful number, since it uses less digits than its factorization.

126171772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31542947 (or 31542945 counting only the distinct ones).

The product of its digits is 8232, while the sum is 34.

The square root of 126171772 is about 11232.6208873976. The cubic root of 126171772 is about 501.5575059793.

The spelling of 126171772 in words is "one hundred twenty-six million, one hundred seventy-one thousand, seven hundred seventy-two".