121402124 has 24 divisors (see below), whose sum is σ = 216456240. Its totient is φ = 59564736.

The previous prime is 121402123. The next prime is 121402147. The reversal of 121402124 is 421204121.

It is a super-2 number, since 2×121402124² = 29476951423422752, which contains 22 as substring.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (121402123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84242 + ... + 85670.

It is an arithmetic number, because the mean of its divisors is an integer number (9019010).

Almost surely, 2^121402124 is an apocalyptic number.

It is an amenable number.

121402124 is a deficient number, since it is larger than the sum of its proper divisors (95054116).

121402124 is a wasteful number, since it uses less digits than its factorization.

121402124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817 (or 1815 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 121402124 is about 11018.2632025197. The cubic root of 121402124 is about 495.1560559553.

Adding to 121402124 its reverse (421204121), we get a palindrome (542606245).

The spelling of 121402124 in words is "one hundred twenty-one million, four hundred two thousand, one hundred twenty-four".