42200040 has 32 divisors (see below), whose sum is σ = 126600480. Its totient is φ = 11253312.

The previous prime is 42200023. The next prime is 42200077. The reversal of 42200040 is 4000224.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 42199989 and 42200025.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175714 + ... + 175953.

It is an arithmetic number, because the mean of its divisors is an integer number (3956265).

Almost surely, 2^42200040 is an apocalyptic number.

42200040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42200040 is an abundant number, since it is smaller than the sum of its proper divisors (84400440).

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

42200040 is a wasteful number, since it uses less digits than its factorization.

42200040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351681 (or 351677 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 42200040 is about 6496.1557863093. The cubic root of 42200040 is about 348.1536512663.

Adding to 42200040 its reverse (4000224), we get a palindrome (46200264).

The spelling of 42200040 in words is "forty-two million, two hundred thousand, forty".