1240129670 has 32 divisors (see below), whose sum is σ = 2411162208. Its totient is φ = 456519168.

The previous prime is 1240129637. The next prime is 1240129717. The reversal of 1240129670 is 769210421.

It is a happy number.

It is a congruent number.

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, 29657 + ... + 57963.

It is an arithmetic number, because the mean of its divisors is an integer number (75348819).

Almost surely, 2^1240129670 is an apocalyptic number.

1240129670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1240129670 is a deficient number, since it is larger than the sum of its proper divisors (1171032538).

1240129670 is a wasteful number, since it uses less digits than its factorization.

1240129670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28664.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1240129670 is about 35215.4748654622. The cubic root of 1240129670 is about 1074.3745184170.

The spelling of 1240129670 in words is "one billion, two hundred forty million, one hundred twenty-nine thousand, six hundred seventy".