42656494 has 4 divisors (see below), whose sum is σ = 63984744. Its totient is φ = 21328246.

The previous prime is 42656491. The next prime is 42656521. The reversal of 42656494 is 49465624.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42656491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10664122 + ... + 10664125.

It is an arithmetic number, because the mean of its divisors is an integer number (15996186).

Almost surely, 2^42656494 is an apocalyptic number.

42656494 is a deficient number, since it is larger than the sum of its proper divisors (21328250).

42656494 is a wasteful number, since it uses less digits than its factorization.

42656494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21328249.

The product of its digits is 207360, while the sum is 40.

The square root of 42656494 is about 6531.1939184195. The cubic root of 42656494 is about 349.4044129282.

The spelling of 42656494 in words is "forty-two million, six hundred fifty-six thousand, four hundred ninety-four".