42919201 has 4 divisors (see below), whose sum is σ = 46220692. Its totient is φ = 39617712.

The previous prime is 42919193. The next prime is 42919231. The reversal of 42919201 is 10291924.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6630625 + 36288576 = 2575^2 + 6024^2 .

It is a cyclic number.

It is not a de Polignac number, because 42919201 - 2³ = 42919193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42919201.

It is not an unprimeable number, because it can be changed into a prime (42919231) 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, 1650726 + ... + 1650751.

It is an arithmetic number, because the mean of its divisors is an integer number (11555173).

Almost surely, 2^42919201 is an apocalyptic number.

It is an amenable number.

42919201 is a deficient number, since it is larger than the sum of its proper divisors (3301491).

42919201 is a wasteful number, since it uses less digits than its factorization.

42919201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3301490.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 42919201 is about 6551.2747614491. The cubic root of 42919201 is about 350.1202335221.

The spelling of 42919201 in words is "forty-two million, nine hundred nineteen thousand, two hundred one".