121654542 has 16 divisors (see below), whose sum is σ = 243782352. Its totient is φ = 40472640.

The previous prime is 121654529. The next prime is 121654597. The reversal of 121654542 is 245456121.

It is a congruent number.

It is an unprimeable number.

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, 16333 + ... + 22584.

It is an arithmetic number, because the mean of its divisors is an integer number (15236397).

Almost surely, 2^121654542 is an apocalyptic number.

121654542 is an abundant number, since it is smaller than the sum of its proper divisors (122127810).

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

121654542 is a wasteful number, since it uses less digits than its factorization.

121654542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39443.

The product of its digits is 9600, while the sum is 30.

The square root of 121654542 is about 11029.7117822725. The cubic root of 121654542 is about 495.4989927830.

The spelling of 121654542 in words is "one hundred twenty-one million, six hundred fifty-four thousand, five hundred forty-two".