20122142 has 8 divisors (see below), whose sum is σ = 30202416. Its totient is φ = 10054672.

The previous prime is 20122133. The next prime is 20122147. The reversal of 20122142 is 24122102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3743 + ... + 7365.

It is an arithmetic number, because the mean of its divisors is an integer number (3775302).

Almost surely, 2^20122142 is an apocalyptic number.

20122142 is a deficient number, since it is larger than the sum of its proper divisors (10080274).

20122142 is a wasteful number, since it uses less digits than its factorization.

20122142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6402.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 20122142 is about 4485.7710596953. The cubic root of 20122142 is about 271.9932145799.

Adding to 20122142 its reverse (24122102), we get a palindrome (44244244).

The spelling of 20122142 in words is "twenty million, one hundred twenty-two thousand, one hundred forty-two".