921280542 has 32 divisors (see below), whose sum is σ = 2267768832. Its totient is φ = 242974944.

The previous prime is 921280517. The next prime is 921280573. The reversal of 921280542 is 245082129.

921280542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 843118 + ... + 844209.

It is an arithmetic number, because the mean of its divisors is an integer number (70867776).

Almost surely, 2^921280542 is an apocalyptic number.

921280542 is an abundant number, since it is smaller than the sum of its proper divisors (1346488290).

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

921280542 is a wasteful number, since it uses less digits than its factorization.

921280542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687352.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 921280542 is about 30352.6035456598. The cubic root of 921280542 is about 973.0398636996.

The spelling of 921280542 in words is "nine hundred twenty-one million, two hundred eighty thousand, five hundred forty-two".