20142036 has 36 divisors (see below), whose sum is σ = 51315264. Its totient is φ = 6661200.

The previous prime is 20142019. The next prime is 20142047. The reversal of 20142036 is 63024102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×20142036² = 811403228450592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2581 + ... + 6851.

It is an arithmetic number, because the mean of its divisors is an integer number (1425424).

Almost surely, 2^20142036 is an apocalyptic number.

It is an amenable number.

20142036 is an abundant number, since it is smaller than the sum of its proper divisors (31173228).

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

20142036 is a wasteful number, since it uses less digits than its factorization.

20142036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4412 (or 4407 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20142036 is about 4487.9879678983. The cubic root of 20142036 is about 272.0828215207.

Adding to 20142036 its reverse (63024102), we get a palindrome (83166138).

The spelling of 20142036 in words is "twenty million, one hundred forty-two thousand, thirty-six".