129153454 has 8 divisors (see below), whose sum is σ = 205126128. Its totient is φ = 60778080.

The previous prime is 129153439. The next prime is 129153457. The reversal of 129153454 is 454351921.

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

It is a super-2 number, since 2×129153454² = 33361229360260232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 3798631 = 129153454 / (1 + 2 + 9 + 1 + 5 + 3 + 4 + 5 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129153457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1899282 + ... + 1899349.

It is an arithmetic number, because the mean of its divisors is an integer number (25640766).

Almost surely, 2^129153454 is an apocalyptic number.

129153454 is a deficient number, since it is larger than the sum of its proper divisors (75972674).

129153454 is a wasteful number, since it uses less digits than its factorization.

129153454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3798650.

The product of its digits is 21600, while the sum is 34.

The square root of 129153454 is about 11364.5701194546. The cubic root of 129153454 is about 505.4777089294.

It can be divided in two parts, 1291 and 53454, that added together give a palindrome (54745).

The spelling of 129153454 in words is "one hundred twenty-nine million, one hundred fifty-three thousand, four hundred fifty-four".