42252040 has 32 divisors (see below), whose sum is σ = 95256000. Its totient is φ = 16867264.

The previous prime is 42252019. The next prime is 42252047. The reversal of 42252040 is 4025224.

It is a junction number, because it is equal to n+sod(n) for n = 42251999 and 42252017.

It is not an unprimeable number, because it can be changed into a prime (42252047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32931 + ... + 34189.

It is an arithmetic number, because the mean of its divisors is an integer number (2976750).

Almost surely, 2^42252040 is an apocalyptic number.

42252040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42252040 is an abundant number, since it is smaller than the sum of its proper divisors (53003960).

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

42252040 is a wasteful number, since it uses less digits than its factorization.

42252040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109 (or 2105 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 42252040 is about 6500.1569211827. The cubic root of 42252040 is about 348.2965939340.

Adding to 42252040 its reverse (4025224), we get a palindrome (46277264).

The spelling of 42252040 in words is "forty-two million, two hundred fifty-two thousand, forty".