39278142 has 32 divisors (see below), whose sum is σ = 87528960. Its totient is φ = 13056120.

The previous prime is 39278137. The next prime is 39278159. The reversal of 39278142 is 24187293.

It is a junction number, because it is equal to n+sod(n) for n = 39278097 and 39278106.

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, 24217 + ... + 25787.

It is an arithmetic number, because the mean of its divisors is an integer number (2735280).

Almost surely, 2^39278142 is an apocalyptic number.

39278142 is an abundant number, since it is smaller than the sum of its proper divisors (48250818).

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

39278142 is a wasteful number, since it uses less digits than its factorization.

39278142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045 (or 2039 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 39278142 is about 6267.2276167377. The cubic root of 39278142 is about 339.9254219357.

The spelling of 39278142 in words is "thirty-nine million, two hundred seventy-eight thousand, one hundred forty-two".