121863042 has 96 divisors (see below), whose sum is σ = 316697472. Its totient is φ = 34401024.

The previous prime is 121863041. The next prime is 121863043. The reversal of 121863042 is 240368121.

121863042 is a `hidden beast` number, since 1 + 21 + 8 + 630 + 4 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (121863041) and next prime (121863043).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 121862997 and 121863015.

It is not an unprimeable number, because it can be changed into a prime (121863041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 384268 + ... + 384584.

It is an arithmetic number, because the mean of its divisors is an integer number (3298932).

Almost surely, 2^121863042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121863042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158348736).

121863042 is an abundant number, since it is smaller than the sum of its proper divisors (194834430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121863042 is a wasteful number, since it uses less digits than its factorization.

121863042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 121863042 is about 11039.1594788734. The cubic root of 121863042 is about 495.7819047445.

The spelling of 121863042 in words is "one hundred twenty-one million, eight hundred sixty-three thousand, forty-two".