126397240 has 16 divisors (see below), whose sum is σ = 284393880. Its totient is φ = 50558880.

The previous prime is 126397223. The next prime is 126397247. The reversal of 126397240 is 42793621.

It is a junction number, because it is equal to n+sod(n) for n = 126397196 and 126397205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126397247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1579926 + ... + 1580005.

Almost surely, 2^126397240 is an apocalyptic number.

126397240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126397240 is an abundant number, since it is smaller than the sum of its proper divisors (157996640).

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

126397240 is a wasteful number, since it uses less digits than its factorization.

126397240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159942 (or 3159938 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 126397240 is about 11242.6527118825. The cubic root of 126397240 is about 501.8560880154.

The spelling of 126397240 in words is "one hundred twenty-six million, three hundred ninety-seven thousand, two hundred forty".