129074862 has 32 divisors (see below), whose sum is σ = 297902592. Its totient is φ = 36519264.

The previous prime is 129074851. The next prime is 129074879. The reversal of 129074862 is 268470921.

It is a self number, because there is not a number n which added to its sum of digits gives 129074862.

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, 10593 + ... + 19244.

It is an arithmetic number, because the mean of its divisors is an integer number (9309456).

Almost surely, 2^129074862 is an apocalyptic number.

129074862 is an abundant number, since it is smaller than the sum of its proper divisors (168827730).

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

129074862 is a wasteful number, since it uses less digits than its factorization.

129074862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29952.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 129074862 is about 11361.1118293942. Note that the first 3 decimals coincide. The cubic root of 129074862 is about 505.3751576266.

The spelling of 129074862 in words is "one hundred twenty-nine million, seventy-four thousand, eight hundred sixty-two".