20214142 has 16 divisors (see below), whose sum is σ = 32800320. Its totient is φ = 9287712.

The previous prime is 20214137. The next prime is 20214143. The reversal of 20214142 is 24141202.

It is a super-2 number, since 2×20214142² = 817223073592328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20214143) 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, 4588 + ... + 7840.

It is an arithmetic number, because the mean of its divisors is an integer number (2050020).

Almost surely, 2^20214142 is an apocalyptic number.

20214142 is a deficient number, since it is larger than the sum of its proper divisors (12586178).

20214142 is a wasteful number, since it uses less digits than its factorization.

20214142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 20214142 is about 4496.0140124337. The cubic root of 20214142 is about 272.4071091517.

Adding to 20214142 its reverse (24141202), we get a palindrome (44355344).

The spelling of 20214142 in words is "twenty million, two hundred fourteen thousand, one hundred forty-two".