42940726 has 4 divisors (see below), whose sum is σ = 64411092. Its totient is φ = 21470362.

The previous prime is 42940721. The next prime is 42940823. The reversal of 42940726 is 62704924.

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

It is a junction number, because it is equal to n+sod(n) for n = 42940691 and 42940700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42940721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10735180 + ... + 10735183.

It is an arithmetic number, because the mean of its divisors is an integer number (16102773).

Almost surely, 2^42940726 is an apocalyptic number.

42940726 is a deficient number, since it is larger than the sum of its proper divisors (21470366).

42940726 is a wasteful number, since it uses less digits than its factorization.

42940726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21470365.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 42940726 is about 6552.9173655708. The cubic root of 42940726 is about 350.1787549477.

The spelling of 42940726 in words is "forty-two million, nine hundred forty thousand, seven hundred twenty-six".