126999746 has 16 divisors (see below), whose sum is σ = 198205440. Its totient is φ = 60967620.

The previous prime is 126999739. The next prime is 126999749. The reversal of 126999746 is 647999621.

It is a super-2 number, since 2×126999746² = 32257870968129032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126999749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 999935 + ... + 1000061.

It is an arithmetic number, because the mean of its divisors is an integer number (12387840).

Almost surely, 2^126999746 is an apocalyptic number.

126999746 is a deficient number, since it is larger than the sum of its proper divisors (71205694).

126999746 is an frugal number, since it uses more digits than its factorization.

126999746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 160 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 53.

The square root of 126999746 is about 11269.4164001513. The cubic root of 126999746 is about 502.6522344294.

The spelling of 126999746 in words is "one hundred twenty-six million, nine hundred ninety-nine thousand, seven hundred forty-six".