42211240 has 32 divisors (see below), whose sum is σ = 98253000. Its totient is φ = 16301824.

The previous prime is 42211219. The next prime is 42211259. The reversal of 42211240 is 4211224.

It can be written as a sum of positive squares in 4 ways, for example, as 41293476 + 917764 = 6426^2 + 958^2 .

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, 17035 + ... + 19354.

Almost surely, 2^42211240 is an apocalyptic number.

42211240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42211240 is an abundant number, since it is smaller than the sum of its proper divisors (56041760).

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

42211240 is a wasteful number, since it uses less digits than its factorization.

42211240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36429 (or 36425 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 42211240 is about 6497.0177774114. The cubic root of 42211240 is about 348.1844488357.

Subtracting from 42211240 its sum of digits (16), we obtain a palindrome (42211224).

Adding to 42211240 its reverse (4211224), we get a palindrome (46422464).

The spelling of 42211240 in words is "forty-two million, two hundred eleven thousand, two hundred forty".