42430277 has 4 divisors (see below), whose sum is σ = 43893420. Its totient is φ = 40967136.

The previous prime is 42430273. The next prime is 42430279. The reversal of 42430277 is 77203424.

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 16532356 + 25897921 = 4066^2 + 5089^2 .

It is a cyclic number.

It is not a de Polignac number, because 42430277 - 2² = 42430273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1463113 = 42430277 / (4 + 2 + 4 + 3 + 0 + 2 + 7 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42430273) 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, 731528 + ... + 731585.

It is an arithmetic number, because the mean of its divisors is an integer number (10973355).

Almost surely, 2^42430277 is an apocalyptic number.

It is an amenable number.

42430277 is a deficient number, since it is larger than the sum of its proper divisors (1463143).

42430277 is a wasteful number, since it uses less digits than its factorization.

42430277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463142.

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 42430277 is about 6513.8527002075. The cubic root of 42430277 is about 348.7856610631.

The spelling of 42430277 in words is "forty-two million, four hundred thirty thousand, two hundred seventy-seven".