20141240 has 32 divisors (see below), whose sum is σ = 51792480. Its totient is φ = 6905472.

The previous prime is 20141221. The next prime is 20141249. The reversal of 20141240 is 4214102.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20141249) 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, 35687 + ... + 36246.

It is an arithmetic number, because the mean of its divisors is an integer number (1618515).

Almost surely, 2^20141240 is an apocalyptic number.

20141240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20141240 is an abundant number, since it is smaller than the sum of its proper divisors (31651240).

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

20141240 is a wasteful number, since it uses less digits than its factorization.

20141240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71951 (or 71947 counting only the distinct ones).

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

The square root of 20141240 is about 4487.8992858575. The cubic root of 20141240 is about 272.0792372955.

Adding to 20141240 its reverse (4214102), we get a palindrome (24355342).

The spelling of 20141240 in words is "twenty million, one hundred forty-one thousand, two hundred forty".