281125042 has 16 divisors (see below), whose sum is σ = 460860192. Its totient is φ = 127551520.

The previous prime is 281124983. The next prime is 281125051. The reversal of 281125042 is 240521182.

It is a junction number, because it is equal to n+sod(n) for n = 281124998 and 281125016.

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, 1038 + ... + 23734.

It is an arithmetic number, because the mean of its divisors is an integer number (28803762).

Almost surely, 2^281125042 is an apocalyptic number.

281125042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

281125042 is a deficient number, since it is larger than the sum of its proper divisors (179735150).

281125042 is a wasteful number, since it uses less digits than its factorization.

281125042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23273.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 281125042 is about 16766.7838895836. The cubic root of 281125042 is about 655.0883022960.

The spelling of 281125042 in words is "two hundred eighty-one million, one hundred twenty-five thousand, forty-two".