42149999 has 12 divisors (see below), whose sum is σ = 45345096. Its totient is φ = 39160368.

The previous prime is 42149983. The next prime is 42150001. The reversal of 42149999 is 99994124.

It is not a de Polignac number, because 42149999 - 2⁴ = 42149983 is a prime.

42149999 is a modest number, since divided by 9999 gives 4214 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42149909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18032 + ... + 20234.

It is an arithmetic number, because the mean of its divisors is an integer number (3778758).

Almost surely, 2^42149999 is an apocalyptic number.

42149999 is a deficient number, since it is larger than the sum of its proper divisors (3195097).

42149999 is a wasteful number, since it uses less digits than its factorization.

42149999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294 (or 2275 counting only the distinct ones).

The product of its digits is 209952, while the sum is 47.

The square root of 42149999 is about 6492.3030582375. The cubic root of 42149999 is about 348.0159827732.

The spelling of 42149999 in words is "forty-two million, one hundred forty-nine thousand, nine hundred ninety-nine".