42742706 has 8 divisors (see below), whose sum is σ = 64195740. Its totient is φ = 21344128.

The previous prime is 42742703. The next prime is 42742747. The reversal of 42742706 is 60724724.

It can be written as a sum of positive squares in 2 ways, for example, as 42706225 + 36481 = 6535^2 + 191^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (42742703) 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, 11591 + ... + 14826.

Almost surely, 2^42742706 is an apocalyptic number.

42742706 is a deficient number, since it is larger than the sum of its proper divisors (21453034).

42742706 is a wasteful number, since it uses less digits than its factorization.

42742706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27228.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 42742706 is about 6537.7906053957. The cubic root of 42742706 is about 349.6396454384.

The spelling of 42742706 in words is "forty-two million, seven hundred forty-two thousand, seven hundred six".