278361142 has 16 divisors (see below), whose sum is σ = 422528400. Its totient is φ = 137525248.

The previous prime is 278361137. The next prime is 278361163. The reversal of 278361142 is 241163872.

278361142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 278361098 and 278361107.

It is a congruent number.

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, 94638 + ... + 97534.

It is an arithmetic number, because the mean of its divisors is an integer number (26408025).

Almost surely, 2^278361142 is an apocalyptic number.

278361142 is a deficient number, since it is larger than the sum of its proper divisors (144167258).

278361142 is a wasteful number, since it uses less digits than its factorization.

278361142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3455.

The product of its digits is 16128, while the sum is 34.

The square root of 278361142 is about 16684.1584144961. The cubic root of 278361142 is about 652.9343795626.

The spelling of 278361142 in words is "two hundred seventy-eight million, three hundred sixty-one thousand, one hundred forty-two".