42279646 has 16 divisors (see below), whose sum is σ = 67807584. Its totient is φ = 19701504.

The previous prime is 42279631. The next prime is 42279647. The reversal of 42279646 is 64697224.

It is a junction number, because it is equal to n+sod(n) for n = 42279599 and 42279608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42279647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2535 + ... + 9538.

It is an arithmetic number, because the mean of its divisors is an integer number (4237974).

Almost surely, 2^42279646 is an apocalyptic number.

42279646 is a deficient number, since it is larger than the sum of its proper divisors (25527938).

42279646 is a wasteful number, since it uses less digits than its factorization.

42279646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12195.

The product of its digits is 145152, while the sum is 40.

The square root of 42279646 is about 6502.2800616399. The cubic root of 42279646 is about 348.3724323431.

The spelling of 42279646 in words is "forty-two million, two hundred seventy-nine thousand, six hundred forty-six".