121847042 has 4 divisors (see below), whose sum is σ = 182770566. Its totient is φ = 60923520.

The previous prime is 121847029. The next prime is 121847069. The reversal of 121847042 is 240748121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 65431921 + 56415121 = 8089^2 + 7511^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121846996 and 121847014.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30461759 + ... + 30461762.

Almost surely, 2^121847042 is an apocalyptic number.

121847042 is a deficient number, since it is larger than the sum of its proper divisors (60923524).

121847042 is an equidigital number, since it uses as much as digits as its factorization.

121847042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60923523.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 121847042 is about 11038.4347622297. The cubic root of 121847042 is about 495.7602059107.

The spelling of 121847042 in words is "one hundred twenty-one million, eight hundred forty-seven thousand, forty-two".