121742488 has 32 divisors (see below), whose sum is σ = 265305600. Its totient is φ = 51289632.

The previous prime is 121742483. The next prime is 121742501. The reversal of 121742488 is 884247121.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121742483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15120 + ... + 21727.

It is an arithmetic number, because the mean of its divisors is an integer number (8290800).

Almost surely, 2^121742488 is an apocalyptic number.

It is an amenable number.

121742488 is an abundant number, since it is smaller than the sum of its proper divisors (143563112).

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

121742488 is a wasteful number, since it uses less digits than its factorization.

121742488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36919 (or 36915 counting only the distinct ones).

The product of its digits is 28672, while the sum is 37.

The square root of 121742488 is about 11033.6978388934. The cubic root of 121742488 is about 495.6183653853.

The spelling of 121742488 in words is "one hundred twenty-one million, seven hundred forty-two thousand, four hundred eighty-eight".