280121442 has 16 divisors (see below), whose sum is σ = 560566272. Its totient is φ = 93319920.

The previous prime is 280121437. The next prime is 280121449. The reversal of 280121442 is 244121082.

280121442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (280121449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1378 + ... + 23709.

It is an arithmetic number, because the mean of its divisors is an integer number (35035392).

Almost surely, 2^280121442 is an apocalyptic number.

280121442 is an abundant number, since it is smaller than the sum of its proper divisors (280444830).

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

280121442 is a wasteful number, since it uses less digits than its factorization.

280121442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26953.

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 280121442 is about 16736.8289111169. The cubic root of 280121442 is about 654.3078304705.

The spelling of 280121442 in words is "two hundred eighty million, one hundred twenty-one thousand, four hundred forty-two".