126124072 has 8 divisors (see below), whose sum is σ = 236482650. Its totient is φ = 63062032.

The previous prime is 126124067. The next prime is 126124073. The reversal of 126124072 is 270421621.

It can be written as a sum of positive squares in only one way, i.e., 108868356 + 17255716 = 10434^2 + 4154^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×126124072² = 31814563075722368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126124073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7882747 + ... + 7882762.

Almost surely, 2^126124072 is an apocalyptic number.

It is an amenable number.

126124072 is a deficient number, since it is larger than the sum of its proper divisors (110358578).

126124072 is a wasteful number, since it uses less digits than its factorization.

126124072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15765515 (or 15765511 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 126124072 is about 11230.4974066156. The cubic root of 126124072 is about 501.4942923983.

Adding to 126124072 its reverse (270421621), we get a palindrome (396545693).

The spelling of 126124072 in words is "one hundred twenty-six million, one hundred twenty-four thousand, seventy-two".