42742078 has 8 divisors (see below), whose sum is σ = 65199960. Its totient is φ = 21008760.

The previous prime is 42742069. The next prime is 42742079. The reversal of 42742078 is 87024724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42742079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180993 + ... + 181228.

It is an arithmetic number, because the mean of its divisors is an integer number (8149995).

Almost surely, 2^42742078 is an apocalyptic number.

42742078 is a deficient number, since it is larger than the sum of its proper divisors (22457882).

42742078 is a wasteful number, since it uses less digits than its factorization.

42742078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362282.

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 42742078 is about 6537.7425767615. The cubic root of 42742078 is about 349.6379330622.

The spelling of 42742078 in words is "forty-two million, seven hundred forty-two thousand, seventy-eight".