42103990 has 8 divisors (see below), whose sum is σ = 75787200. Its totient is φ = 16841592.

The previous prime is 42103987. The next prime is 42104003. The reversal of 42103990 is 9930124.

It is a happy number.

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, 2105190 + ... + 2105209.

It is an arithmetic number, because the mean of its divisors is an integer number (9473400).

Almost surely, 2^42103990 is an apocalyptic number.

42103990 is a deficient number, since it is larger than the sum of its proper divisors (33683210).

42103990 is a wasteful number, since it uses less digits than its factorization.

42103990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210406.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 42103990 is about 6488.7587410845. The cubic root of 42103990 is about 347.8893105929.

The spelling of 42103990 in words is "forty-two million, one hundred three thousand, nine hundred ninety".