126065640 has 64 divisors (see below), whose sum is σ = 379180800. Its totient is φ = 33530112.

The previous prime is 126065579. The next prime is 126065651. The reversal of 126065640 is 46560621.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 126065598 and 126065607.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54426 + ... + 56694.

It is an arithmetic number, because the mean of its divisors is an integer number (5924700).

Almost surely, 2^126065640 is an apocalyptic number.

126065640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126065640 is an abundant number, since it is smaller than the sum of its proper divisors (253115160).

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

126065640 is a wasteful number, since it uses less digits than its factorization.

126065640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2746 (or 2742 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 126065640 is about 11227.8956176124. The cubic root of 126065640 is about 501.4168347000.

The spelling of 126065640 in words is "one hundred twenty-six million, sixty-five thousand, six hundred forty".