40642451535042 has 48 divisors (see below), whose sum is σ = 100643644221120. Its totient is φ = 11611529840736.

The previous prime is 40642451535019. The next prime is 40642451535137. The reversal of 40642451535042 is 24053515424604.

It is a happy number.

40642451535042 is a `hidden beast` number, since 4 + 0 + 6 + 4 + 24 + 51 + 535 + 0 + 42 = 666.

It is a super-3 number, since 3×40642451535042³ (a number of 42 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5867317 + ... + 10756872.

It is an arithmetic number, because the mean of its divisors is an integer number (2096742587940).

Almost surely, 2^{40642451535042} is an apocalyptic number.

40642451535042 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

40642451535042 is an abundant number, since it is smaller than the sum of its proper divisors (60001192686078).

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

40642451535042 is a wasteful number, since it uses less digits than its factorization.

40642451535042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16643607 (or 16643604 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 45.

Adding to 40642451535042 its reverse (24053515424604), we get a palindrome (64695966959646).

The spelling of 40642451535042 in words is "forty trillion, six hundred forty-two billion, four hundred fifty-one million, five hundred thirty-five thousand, forty-two".