121783252 has 24 divisors (see below), whose sum is σ = 229565952. Its totient is φ = 56364000.

The previous prime is 121783237. The next prime is 121783271. The reversal of 121783252 is 252387121.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18499 + ... + 24202.

It is an arithmetic number, because the mean of its divisors is an integer number (9565248).

Almost surely, 2^121783252 is an apocalyptic number.

It is an amenable number.

121783252 is a deficient number, since it is larger than the sum of its proper divisors (107782700).

121783252 is a wasteful number, since it uses less digits than its factorization.

121783252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42759 (or 42757 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 121783252 is about 11035.5449344380. The cubic root of 121783252 is about 495.6736764845.

The spelling of 121783252 in words is "one hundred twenty-one million, seven hundred eighty-three thousand, two hundred fifty-two".