121942429 has 12 divisors (see below), whose sum is σ = 143853408. Its totient is φ = 103047000.

The previous prime is 121942423. The next prime is 121942459. The reversal of 121942429 is 924249121.

It is a happy number.

It is not a de Polignac number, because 121942429 - 2⁵ = 121942397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121942394 and 121942403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121942423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14047 + ... + 21004.

It is an arithmetic number, because the mean of its divisors is an integer number (11987784).

Almost surely, 2^121942429 is an apocalyptic number.

It is an amenable number.

121942429 is a deficient number, since it is larger than the sum of its proper divisors (21910979).

121942429 is an equidigital number, since it uses as much as digits as its factorization.

121942429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35136 (or 35129 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 121942429 is about 11042.7545929446. The cubic root of 121942429 is about 495.8895394954.

The spelling of 121942429 in words is "one hundred twenty-one million, nine hundred forty-two thousand, four hundred twenty-nine".