277139142 has 48 divisors (see below), whose sum is σ = 689195520. Its totient is φ = 78842736.

The previous prime is 277139129. The next prime is 277139153. The reversal of 277139142 is 241931772.

It is a super-3 number, since 3×277139142³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 277139097 and 277139106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25513 + ... + 34715.

It is an arithmetic number, because the mean of its divisors is an integer number (14358240).

Almost surely, 2^277139142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 277139142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344597760).

277139142 is an abundant number, since it is smaller than the sum of its proper divisors (412056378).

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

277139142 is a wasteful number, since it uses less digits than its factorization.

277139142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9457 (or 9454 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 277139142 is about 16647.4965685535. The cubic root of 277139142 is about 651.9775215882.

The spelling of 277139142 in words is "two hundred seventy-seven million, one hundred thirty-nine thousand, one hundred forty-two".