121031429 has 2 divisors, whose sum is σ = 121031430. Its totient is φ = 121031428.

The previous prime is 121031399. The next prime is 121031437. The reversal of 121031429 is 924130121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118766404 + 2265025 = 10898^2 + 1505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121031429 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121001429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60515714 + 60515715.

It is an arithmetic number, because the mean of its divisors is an integer number (60515715).

Almost surely, 2^121031429 is an apocalyptic number.

It is an amenable number.

121031429 is a deficient number, since it is larger than the sum of its proper divisors (1).

121031429 is an equidigital number, since it uses as much as digits as its factorization.

121031429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 121031429 is about 11001.4284981542. The cubic root of 121031429 is about 494.6515644695.

The spelling of 121031429 in words is "one hundred twenty-one million, thirty-one thousand, four hundred twenty-nine".