42111147 has 16 divisors (see below), whose sum is σ = 61875968. Its totient is φ = 25310880.

The previous prime is 42111131. The next prime is 42111211. The reversal of 42111147 is 74111124.

It is not a de Polignac number, because 42111147 - 2⁴ = 42111131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42111247) 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, 10879 + ... + 14232.

It is an arithmetic number, because the mean of its divisors is an integer number (3867248).

Almost surely, 2^42111147 is an apocalyptic number.

42111147 is a deficient number, since it is larger than the sum of its proper divisors (19764821).

42111147 is a wasteful number, since it uses less digits than its factorization.

42111147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25170.

The product of its digits is 224, while the sum is 21.

The square root of 42111147 is about 6489.3102098759. The cubic root of 42111147 is about 347.9090213355.

The spelling of 42111147 in words is "forty-two million, one hundred eleven thousand, one hundred forty-seven".