129417690 has 32 divisors (see below), whose sum is σ = 311564736. Its totient is φ = 34404480.

The previous prime is 129417671. The next prime is 129417697. The reversal of 129417690 is 96714921.

It is a super-2 number, since 2×129417690² = 33497876969872200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129417697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3414 + ... + 16446.

It is an arithmetic number, because the mean of its divisors is an integer number (9736398).

Almost surely, 2^129417690 is an apocalyptic number.

129417690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129417690 is an abundant number, since it is smaller than the sum of its proper divisors (182147046).

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

129417690 is a wasteful number, since it uses less digits than its factorization.

129417690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13374.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 129417690 is about 11376.1896081245. The cubic root of 129417690 is about 505.8221942933.

The spelling of 129417690 in words is "one hundred twenty-nine million, four hundred seventeen thousand, six hundred ninety".