20142629 has 16 divisors (see below), whose sum is σ = 22296960. Its totient is φ = 18083520.

The previous prime is 20142613. The next prime is 20142673. The reversal of 20142629 is 92624102.

20142629 = 80² + 81² + ... + 393².

It is not a de Polignac number, because 20142629 - 2⁴ = 20142613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20142598 and 20142607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20142929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128219 + ... + 128375.

It is an arithmetic number, because the mean of its divisors is an integer number (1393560).

Almost surely, 2^20142629 is an apocalyptic number.

It is an amenable number.

20142629 is a deficient number, since it is larger than the sum of its proper divisors (2154331).

20142629 is a wasteful number, since it uses less digits than its factorization.

20142629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20142629 is about 4488.0540326516. The cubic root of 20142629 is about 272.0854916170.

The spelling of 20142629 in words is "twenty million, one hundred forty-two thousand, six hundred twenty-nine".