42345736 has 8 divisors (see below), whose sum is σ = 79398270. Its totient is φ = 21172864.

The previous prime is 42345727. The next prime is 42345739. The reversal of 42345736 is 63754324.

It can be written as a sum of positive squares in only one way, i.e., 37283236 + 5062500 = 6106^2 + 2250^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×42345736² = 3586322714763392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42345739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2646601 + ... + 2646616.

Almost surely, 2^42345736 is an apocalyptic number.

It is an amenable number.

42345736 is a deficient number, since it is larger than the sum of its proper divisors (37052534).

42345736 is a wasteful number, since it uses less digits than its factorization.

42345736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5293223 (or 5293219 counting only the distinct ones).

The product of its digits is 60480, while the sum is 34.

The square root of 42345736 is about 6507.3601406407. The cubic root of 42345736 is about 348.5538588679.

The spelling of 42345736 in words is "forty-two million, three hundred forty-five thousand, seven hundred thirty-six".