42222407 has 4 divisors (see below), whose sum is σ = 44706096. Its totient is φ = 39738720.

The previous prime is 42222391. The next prime is 42222409. The reversal of 42222407 is 70422224.

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 42222407 - 2⁴ = 42222391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42222409) 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, 1241819 + ... + 1241852.

It is an arithmetic number, because the mean of its divisors is an integer number (11176524).

Almost surely, 2^42222407 is an apocalyptic number.

42222407 is a deficient number, since it is larger than the sum of its proper divisors (2483689).

42222407 is a wasteful number, since it uses less digits than its factorization.

42222407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483688.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 42222407 is about 6497.8771148737. The cubic root of 42222407 is about 348.2151502391.

The spelling of 42222407 in words is "forty-two million, two hundred twenty-two thousand, four hundred seven".