40042385234 has 8 divisors (see below), whose sum is σ = 60206247948. Its totient is φ = 19973635920.

The previous prime is 40042385231. The next prime is 40042385287. The reversal of 40042385234 is 43258324004.

40042385234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 38834614225 + 1207771009 = 197065^2 + 34753^2 .

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

It is a super-2 number, since 2×40042385234² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40042385194 and 40042385203.

It is not an unprimeable number, because it can be changed into a prime (40042385231) 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, 23777297 + ... + 23778980.

Almost surely, 2^40042385234 is an apocalyptic number.

40042385234 is a deficient number, since it is larger than the sum of its proper divisors (20163862714).

40042385234 is a wasteful number, since it uses less digits than its factorization.

40042385234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47556700.

The product of its (nonzero) digits is 92160, while the sum is 35.

The spelling of 40042385234 in words is "forty billion, forty-two million, three hundred eighty-five thousand, two hundred thirty-four".