40235021645542 has 32 divisors (see below), whose sum is σ = 61187847114240. Its totient is φ = 19841170678560.

The previous prime is 40235021645527. The next prime is 40235021645549. The reversal of 40235021645542 is 24554612053204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40235021645549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58863913 + ... + 59543515.

It is an arithmetic number, because the mean of its divisors is an integer number (1912120222320).

Almost surely, 2^{40235021645542} is an apocalyptic number.

40235021645542 is a deficient number, since it is larger than the sum of its proper divisors (20952825468698).

40235021645542 is a wasteful number, since it uses less digits than its factorization.

40235021645542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681148.

The product of its (nonzero) digits is 1152000, while the sum is 43.

Adding to 40235021645542 its reverse (24554612053204), we get a palindrome (64789633698746).

The spelling of 40235021645542 in words is "forty trillion, two hundred thirty-five billion, twenty-one million, six hundred forty-five thousand, five hundred forty-two".