42011240 has 16 divisors (see below), whose sum is σ = 94525380. Its totient is φ = 16804480.

The previous prime is 42011213. The next prime is 42011251. The reversal of 42011240 is 4211024.

It can be written as a sum of positive squares in 2 ways, for example, as 34316164 + 7695076 = 5858^2 + 2774^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525101 + ... + 525180.

Almost surely, 2^42011240 is an apocalyptic number.

42011240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42011240 is an abundant number, since it is smaller than the sum of its proper divisors (52514140).

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

42011240 is a wasteful number, since it uses less digits than its factorization.

42011240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050292 (or 1050288 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 42011240 is about 6481.6078252236. The cubic root of 42011240 is about 347.6336700876.

Adding to 42011240 its reverse (4211024), we get a palindrome (46222264).

The spelling of 42011240 in words is "forty-two million, eleven thousand, two hundred forty".