42210147 has 16 divisors (see below), whose sum is σ = 64566272. Its totient is φ = 24027840.

The previous prime is 42210137. The next prime is 42210163. The reversal of 42210147 is 74101224.

It is a happy number.

It is not a de Polignac number, because 42210147 - 2⁷ = 42210019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42210137) 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, 1983 + ... + 9399.

It is an arithmetic number, because the mean of its divisors is an integer number (4035392).

Almost surely, 2^42210147 is an apocalyptic number.

42210147 is a deficient number, since it is larger than the sum of its proper divisors (22356125).

42210147 is a wasteful number, since it uses less digits than its factorization.

42210147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7698.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 42210147 is about 6496.9336613513. The cubic root of 42210147 is about 348.1814435628.

The spelling of 42210147 in words is "forty-two million, two hundred ten thousand, one hundred forty-seven".