42070318 has 4 divisors (see below), whose sum is σ = 63105480. Its totient is φ = 21035158.

The previous prime is 42070309. The next prime is 42070319. The reversal of 42070318 is 81307024.

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

It is a super-2 number, since 2×42070318² = 3539823313242248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42070292 and 42070301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42070319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10517578 + ... + 10517581.

It is an arithmetic number, because the mean of its divisors is an integer number (15776370).

Almost surely, 2^42070318 is an apocalyptic number.

42070318 is a deficient number, since it is larger than the sum of its proper divisors (21035162).

42070318 is a wasteful number, since it uses less digits than its factorization.

42070318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21035161.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 42070318 is about 6486.1635810393. The cubic root of 42070318 is about 347.7965462018.

The spelling of 42070318 in words is "forty-two million, seventy thousand, three hundred eighteen".