121402024 has 8 divisors (see below), whose sum is σ = 227628810. Its totient is φ = 60701008.

The previous prime is 121402019. The next prime is 121402051. The reversal of 121402024 is 420204121.

It can be written as a sum of positive squares in only one way, i.e., 107785924 + 13616100 = 10382^2 + 3690^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 121401989 and 121402007.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7587619 + ... + 7587634.

Almost surely, 2^121402024 is an apocalyptic number.

It is an amenable number.

121402024 is a deficient number, since it is larger than the sum of its proper divisors (106226786).

121402024 is a wasteful number, since it uses less digits than its factorization.

121402024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15175259 (or 15175255 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 121402024 is about 11018.2586645985. The cubic root of 121402024 is about 495.1559200004.

Adding to 121402024 its reverse (420204121), we get a palindrome (541606145).

The spelling of 121402024 in words is "one hundred twenty-one million, four hundred two thousand, twenty-four".