129403090 has 8 divisors (see below), whose sum is σ = 232925580. Its totient is φ = 51761232.

The previous prime is 129403081. The next prime is 129403111. The reversal of 129403090 is 90304921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 123676641 + 5726449 = 11121^2 + 2393^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6470145 + ... + 6470164.

Almost surely, 2^129403090 is an apocalyptic number.

129403090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129403090 is a deficient number, since it is larger than the sum of its proper divisors (103522490).

129403090 is a wasteful number, since it uses less digits than its factorization.

129403090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12940316.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 129403090 is about 11375.5478988926. The cubic root of 129403090 is about 505.8031724688.

The spelling of 129403090 in words is "one hundred twenty-nine million, four hundred three thousand, ninety".