220140342 has 20 divisors (see below), whose sum is σ = 493277796. Its totient is φ = 73380060.

The previous prime is 220140317. The next prime is 220140353. The reversal of 220140342 is 243041022.

220140342 is a `hidden beast` number, since 220 + 1 + 403 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 679284 + ... + 679607.

Almost surely, 2^220140342 is an apocalyptic number.

220140342 is an abundant number, since it is smaller than the sum of its proper divisors (273137454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220140342 is a wasteful number, since it uses less digits than its factorization.

220140342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358905 (or 1358896 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 220140342 is about 14837.1271478005. The cubic root of 220140342 is about 603.8094127713.

Adding to 220140342 its reverse (243041022), we get a palindrome (463181364).

The spelling of 220140342 in words is "two hundred twenty million, one hundred forty thousand, three hundred forty-two".