40142101242 has 64 divisors (see below), whose sum is σ = 82240220160. Its totient is φ = 13059427584.

The previous prime is 40142101229. The next prime is 40142101243. The reversal of 40142101242 is 24210124104.

It is a super-2 number, since 2×40142101242² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40142101243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20201373 + ... + 20203359.

It is an arithmetic number, because the mean of its divisors is an integer number (1285003440).

Almost surely, 2^40142101242 is an apocalyptic number.

40142101242 is an abundant number, since it is smaller than the sum of its proper divisors (42098118918).

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

40142101242 is a wasteful number, since it uses less digits than its factorization.

40142101242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 40142101242 its reverse (24210124104), we get a palindrome (64352225346).

The spelling of 40142101242 in words is "forty billion, one hundred forty-two million, one hundred one thousand, two hundred forty-two".