20142694 has 16 divisors (see below), whose sum is σ = 35496720. Its totient is φ = 8451360.

The previous prime is 20142673. The next prime is 20142701. The reversal of 20142694 is 49624102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34929 + ... + 35500.

It is an arithmetic number, because the mean of its divisors is an integer number (2218545).

Almost surely, 2^20142694 is an apocalyptic number.

20142694 is a deficient number, since it is larger than the sum of its proper divisors (15354026).

20142694 is a wasteful number, since it uses less digits than its factorization.

20142694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70455.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 20142694 is about 4488.0612740915. The cubic root of 20142694 is about 272.0857842888.

Adding to 20142694 its reverse (49624102), we get a palindrome (69766796).

The spelling of 20142694 in words is "twenty million, one hundred forty-two thousand, six hundred ninety-four".