42778414 has 8 divisors (see below), whose sum is σ = 73334448. Its totient is φ = 18333600.

The previous prime is 42778403. The next prime is 42778441. The reversal of 42778414 is 41487724.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1527787 + ... + 1527814.

It is an arithmetic number, because the mean of its divisors is an integer number (9166806).

Almost surely, 2^42778414 is an apocalyptic number.

42778414 is a deficient number, since it is larger than the sum of its proper divisors (30556034).

42778414 is a wasteful number, since it uses less digits than its factorization.

42778414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3055610.

The product of its digits is 50176, while the sum is 37.

The square root of 42778414 is about 6540.5209272657. The cubic root of 42778414 is about 349.7369833512.

The spelling of 42778414 in words is "forty-two million, seven hundred seventy-eight thousand, four hundred fourteen".