129954476 has 12 divisors (see below), whose sum is σ = 227990280. Its totient is φ = 64814400.

The previous prime is 129954469. The next prime is 129954491. The reversal of 129954476 is 674459921.

It is a self number, because there is not a number n which added to its sum of digits gives 129954476.

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, 38906 + ... + 42113.

It is an arithmetic number, because the mean of its divisors is an integer number (18999190).

Almost surely, 2^129954476 is an apocalyptic number.

It is an amenable number.

129954476 is a deficient number, since it is larger than the sum of its proper divisors (98035804).

129954476 is a wasteful number, since it uses less digits than its factorization.

129954476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81424 (or 81422 counting only the distinct ones).

The product of its digits is 544320, while the sum is 47.

The square root of 129954476 is about 11399.7577167236. The cubic root of 129954476 is about 506.5205628670.

Subtracting 129954476 from its reverse (674459921), we obtain a palindrome (544505445).

It can be divided in two parts, 12995 and 4476, that added together give a palindrome (17471).

The spelling of 129954476 in words is "one hundred twenty-nine million, nine hundred fifty-four thousand, four hundred seventy-six".