42495640 has 32 divisors (see below), whose sum is σ = 104308560. Its totient is φ = 15452800.

The previous prime is 42495623. The next prime is 42495641. The reversal of 42495640 is 4659424.

It is a junction number, because it is equal to n+sod(n) for n = 42495596 and 42495605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42495641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47851 + ... + 48730.

Almost surely, 2^42495640 is an apocalyptic number.

42495640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42495640 is an abundant number, since it is smaller than the sum of its proper divisors (61812920).

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

42495640 is a wasteful number, since it uses less digits than its factorization.

42495640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96603 (or 96599 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 42495640 is about 6518.8679998908. The cubic root of 42495640 is about 348.9646683061.

It can be divided in two parts, 4249 and 5640, that added together give a palindrome (9889).

The spelling of 42495640 in words is "forty-two million, four hundred ninety-five thousand, six hundred forty".