20423342 has 16 divisors (see below), whose sum is σ = 31307472. Its totient is φ = 9989760.

The previous prime is 20423329. The next prime is 20423353. The reversal of 20423342 is 24332402.

It is a super-2 number, since 2×20423342² = 834225796897928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22742 + ... + 23622.

It is an arithmetic number, because the mean of its divisors is an integer number (1956717).

Almost surely, 2^20423342 is an apocalyptic number.

20423342 is a deficient number, since it is larger than the sum of its proper divisors (10884130).

20423342 is a wasteful number, since it uses less digits than its factorization.

20423342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 20423342 is about 4519.2191803452. The cubic root of 20423342 is about 273.3436168383.

Adding to 20423342 its reverse (24332402), we get a palindrome (44755744).

The spelling of 20423342 in words is "twenty million, four hundred twenty-three thousand, three hundred forty-two".