42349851 has 24 divisors (see below), whose sum is σ = 63794640. Its totient is φ = 27765216.

The previous prime is 42349817. The next prime is 42349859. The reversal of 42349851 is 15894324.

It is not a de Polignac number, because 42349851 - 2¹⁰ = 42348827 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

Its product of digits (34560) is a multiple of the sum of its prime factors (360).

It is not an unprimeable number, because it can be changed into a prime (42349859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 309055 + ... + 309191.

It is an arithmetic number, because the mean of its divisors is an integer number (2658110).

Almost surely, 2^42349851 is an apocalyptic number.

42349851 is a deficient number, since it is larger than the sum of its proper divisors (21444789).

42349851 is a wasteful number, since it uses less digits than its factorization.

42349851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 247 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 42349851 is about 6507.6763134010. The cubic root of 42349851 is about 348.5651488884.

The spelling of 42349851 in words is "forty-two million, three hundred forty-nine thousand, eight hundred fifty-one".