20122040 has 32 divisors (see below), whose sum is σ = 45405360. Its totient is φ = 8025600.

The previous prime is 20122031. The next prime is 20122049. The reversal of 20122040 is 4022102.

It is an interprime number because it is at equal distance from previous prime (20122031) and next prime (20122049).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22400 + ... + 23280.

Almost surely, 2^20122040 is an apocalyptic number.

20122040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122040 is an abundant number, since it is smaller than the sum of its proper divisors (25283320).

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

20122040 is a wasteful number, since it uses less digits than its factorization.

20122040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463 (or 1459 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 20122040 is about 4485.7596903980. The cubic root of 20122040 is about 271.9927549973.

Adding to 20122040 its reverse (4022102), we get a palindrome (24144142).

The spelling of 20122040 in words is "twenty million, one hundred twenty-two thousand, forty".