42700279 has 4 divisors (see below), whose sum is σ = 42883776. Its totient is φ = 42516784.

The previous prime is 42700261. The next prime is 42700283. The reversal of 42700279 is 97200724.

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 42700279 - 2²¹ = 40603127 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 42700279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42700219) 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, 91399 + ... + 91864.

It is an arithmetic number, because the mean of its divisors is an integer number (10720944).

Almost surely, 2^42700279 is an apocalyptic number.

42700279 is a deficient number, since it is larger than the sum of its proper divisors (183497).

42700279 is a wasteful number, since it uses less digits than its factorization.

42700279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183496.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 42700279 is about 6534.5450491981. The cubic root of 42700279 is about 349.5239214274.

The spelling of 42700279 in words is "forty-two million, seven hundred thousand, two hundred seventy-nine".