109920429 has 32 divisors (see below), whose sum is σ = 166320000. Its totient is φ = 71736192.

The previous prime is 109920403. The next prime is 109920431. The reversal of 109920429 is 924029901.

It is not a de Polignac number, because 109920429 - 2⁹ = 109919917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109920393 and 109920402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109920439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 357894 + ... + 358200.

It is an arithmetic number, because the mean of its divisors is an integer number (5197500).

Almost surely, 2^109920429 is an apocalyptic number.

It is an amenable number.

109920429 is a deficient number, since it is larger than the sum of its proper divisors (56399571).

109920429 is a wasteful number, since it uses less digits than its factorization.

109920429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 109920429 is about 10484.2943968586. The cubic root of 109920429 is about 479.0264250890.

It can be divided in two parts, 1099 and 20429, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 109920429 in words is "one hundred nine million, nine hundred twenty thousand, four hundred twenty-nine".