20613142 has 16 divisors (see below), whose sum is σ = 34894800. Its totient is φ = 9046240.

The previous prime is 20613139. The next prime is 20613149. The reversal of 20613142 is 24131602.

20613142 = T₁₈₈ + T₁₈₉ + ... + T₅₀₆.

It is a super-2 number, since 2×20613142² = 849803246224328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20613149) 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, 15517 + ... + 16792.

It is an arithmetic number, because the mean of its divisors is an integer number (2180925).

Almost surely, 2^20613142 is an apocalyptic number.

20613142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20613142 is a deficient number, since it is larger than the sum of its proper divisors (14281658).

20613142 is a wasteful number, since it uses less digits than its factorization.

20613142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32351.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20613142 is about 4540.1698206124. The cubic root of 20613142 is about 274.1877609110.

Adding to 20613142 its reverse (24131602), we get a palindrome (44744744).

The spelling of 20613142 in words is "twenty million, six hundred thirteen thousand, one hundred forty-two".