420195147 has 4 divisors (see below), whose sum is σ = 560260200. Its totient is φ = 280130096.

The previous prime is 420195131. The next prime is 420195157. The reversal of 420195147 is 741591024.

It is a happy number.

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 420195147 - 2⁴ = 420195131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420195157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70032522 + ... + 70032527.

It is an arithmetic number, because the mean of its divisors is an integer number (140065050).

Almost surely, 2^420195147 is an apocalyptic number.

420195147 is a deficient number, since it is larger than the sum of its proper divisors (140065053).

420195147 is a wasteful number, since it uses less digits than its factorization.

420195147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140065052.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 420195147 is about 20498.6620782918. The cubic root of 420195147 is about 749.0032073483.

The spelling of 420195147 in words is "four hundred twenty million, one hundred ninety-five thousand, one hundred forty-seven".