42138294 has 16 divisors (see below), whose sum is σ = 91938240. Its totient is φ = 12769160.

The previous prime is 42138289. The next prime is 42138307. The reversal of 42138294 is 49283124.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

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, 319164 + ... + 319295.

It is an arithmetic number, because the mean of its divisors is an integer number (5746140).

Almost surely, 2^42138294 is an apocalyptic number.

42138294 is an abundant number, since it is smaller than the sum of its proper divisors (49799946).

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

42138294 is a wasteful number, since it uses less digits than its factorization.

42138294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638475.

The product of its digits is 13824, while the sum is 33.

The square root of 42138294 is about 6491.4015435806. The cubic root of 42138294 is about 347.9837652619.

The spelling of 42138294 in words is "forty-two million, one hundred thirty-eight thousand, two hundred ninety-four".