129149355 has 16 divisors (see below), whose sum is σ = 209551104. Its totient is φ = 67908960.

The previous prime is 129149341. The next prime is 129149399. The reversal of 129149355 is 553941921.

It is not a de Polignac number, because 129149355 - 2⁶ = 129149291 is a prime.

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, 59569 + ... + 61698.

It is an arithmetic number, because the mean of its divisors is an integer number (13096944).

Almost surely, 2^129149355 is an apocalyptic number.

129149355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

129149355 is a deficient number, since it is larger than the sum of its proper divisors (80401749).

129149355 is a wasteful number, since it uses less digits than its factorization.

129149355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121346.

The product of its digits is 48600, while the sum is 39.

The square root of 129149355 is about 11364.3897768424. The cubic root of 129149355 is about 505.4723613500.

The spelling of 129149355 in words is "one hundred twenty-nine million, one hundred forty-nine thousand, three hundred fifty-five".