421010147 has 4 divisors (see below), whose sum is σ = 439314960. Its totient is φ = 402705336.

The previous prime is 421010143. The next prime is 421010209. The reversal of 421010147 is 741010124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421010147 - 2² = 421010143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421010143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9152372 + ... + 9152417.

It is an arithmetic number, because the mean of its divisors is an integer number (109828740).

Almost surely, 2^421010147 is an apocalyptic number.

421010147 is a deficient number, since it is larger than the sum of its proper divisors (18304813).

421010147 is a wasteful number, since it uses less digits than its factorization.

421010147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18304812.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 421010147 is about 20518.5317944535. The cubic root of 421010147 is about 749.4871439033.

The spelling of 421010147 in words is "four hundred twenty-one million, ten thousand, one hundred forty-seven".