40142122 has 8 divisors (see below), whose sum is σ = 61061472. Its totient is φ = 19788300.

The previous prime is 40142071. The next prime is 40142129. The reversal of 40142122 is 22124104.

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

It is a super-2 number, since 2×40142122² = 3222779917325768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40142096 and 40142105.

It is not an unprimeable number, because it can be changed into a prime (40142129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141204 + ... + 141487.

It is an arithmetic number, because the mean of its divisors is an integer number (7632684).

Almost surely, 2^40142122 is an apocalyptic number.

40142122 is a deficient number, since it is larger than the sum of its proper divisors (20919350).

40142122 is a wasteful number, since it uses less digits than its factorization.

40142122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282764.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 40142122 is about 6335.7810883900. The cubic root of 40142122 is about 342.3997525710.

Adding to 40142122 its reverse (22124104), we get a palindrome (62266226).

The spelling of 40142122 in words is "forty million, one hundred forty-two thousand, one hundred twenty-two".