42994406 has 32 divisors (see below), whose sum is σ = 82833408. Its totient is φ = 16267680.

The previous prime is 42994403. The next prime is 42994439. The reversal of 42994406 is 60449924.

It is a self number, because there is not a number n which added to its sum of digits gives 42994406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42994403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 950 + ... + 9321.

It is an arithmetic number, because the mean of its divisors is an integer number (2588544).

Almost surely, 2^42994406 is an apocalyptic number.

42994406 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

42994406 is a deficient number, since it is larger than the sum of its proper divisors (39839002).

42994406 is a wasteful number, since it uses less digits than its factorization.

42994406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10316.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 42994406 is about 6557.0119719275. The cubic root of 42994406 is about 350.3246131250.

The spelling of 42994406 in words is "forty-two million, nine hundred ninety-four thousand, four hundred six".