129954031 has 2 divisors, whose sum is σ = 129954032. Its totient is φ = 129954030.

The previous prime is 129954029. The next prime is 129954037. The reversal of 129954031 is 130459921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129954031 - 2¹ = 129954029 is a prime.

It is a super-2 number, since 2×129954031² = 33776100346297922, which contains 22 as substring.

Together with 129954029, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129954037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64977015 + 64977016.

It is an arithmetic number, because the mean of its divisors is an integer number (64977016).

Almost surely, 2^129954031 is an apocalyptic number.

129954031 is a deficient number, since it is larger than the sum of its proper divisors (1).

129954031 is an equidigital number, since it uses as much as digits as its factorization.

129954031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 129954031 is about 11399.7381987483. The cubic root of 129954031 is about 506.5199847109.

The spelling of 129954031 in words is "one hundred twenty-nine million, nine hundred fifty-four thousand, thirty-one".