42685370 has 48 divisors (see below), whose sum is σ = 96267528. Its totient is φ = 13507200.

The previous prime is 42685337. The next prime is 42685417. The reversal of 42685370 is 7358624.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24631369 + 18054001 = 4963^2 + 4249^2 .

It is a super-3 number, since 3×42685370³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42685370.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3020 + ... + 9720.

Almost surely, 2^42685370 is an apocalyptic number.

42685370 is an abundant number, since it is smaller than the sum of its proper divisors (53582158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42685370 is a wasteful number, since it uses less digits than its factorization.

42685370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6735 (or 6728 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 42685370 is about 6533.4041662827. The cubic root of 42685370 is about 349.4832373938.

The spelling of 42685370 in words is "forty-two million, six hundred eighty-five thousand, three hundred seventy".