10142240 has 24 divisors (see below), whose sum is σ = 23961420. Its totient is φ = 4056832.

The previous prime is 10142233. The next prime is 10142267. The reversal of 10142240 is 4224101.

It can be written as a sum of positive squares in 2 ways, for example, as 10061584 + 80656 = 3172^2 + 284^2 .

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, 31535 + ... + 31854.

Almost surely, 2^10142240 is an apocalyptic number.

10142240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10142240 is an abundant number, since it is smaller than the sum of its proper divisors (13819180).

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

10142240 is an equidigital number, since it uses as much as digits as its factorization.

10142240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63404 (or 63396 counting only the distinct ones).

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

The square root of 10142240 is about 3184.6883677999. The cubic root of 10142240 is about 216.4601529960.

Adding to 10142240 its reverse (4224101), we get a palindrome (14366341).

The spelling of 10142240 in words is "ten million, one hundred forty-two thousand, two hundred forty".