20755042 has 32 divisors (see below), whose sum is σ = 39029760. Its totient is φ = 8041680.

The previous prime is 20755037. The next prime is 20755043. The reversal of 20755042 is 24055702.

It is a junction number, because it is equal to n+sod(n) for n = 20754998 and 20755016.

It is not an unprimeable number, because it can be changed into a prime (20755043) 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, 47059 + ... + 47497.

It is an arithmetic number, because the mean of its divisors is an integer number (1219680).

Almost surely, 2^20755042 is an apocalyptic number.

20755042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20755042 is a deficient number, since it is larger than the sum of its proper divisors (18274718).

20755042 is a wasteful number, since it uses less digits than its factorization.

20755042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 20755042 is about 4555.7701873558. The cubic root of 20755042 is about 274.8154883505.

It can be divided in two parts, 2075 and 5042, that added together give a palindrome (7117).

The spelling of 20755042 in words is "twenty million, seven hundred fifty-five thousand, forty-two".