542445021241240 has 32 divisors (see below), whose sum is σ = 1314386013008880. Its totient is φ = 200287392458112.

The previous prime is 542445021241163. The next prime is 542445021241241. The reversal of 542445021241240 is 42142120544245.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 542445021241193 and 542445021241202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542445021241241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521581750674 + ... + 521581751713.

Almost surely, 2^{542445021241240} is an apocalyptic number.

It is an amenable number.

542445021241240 is an abundant number, since it is smaller than the sum of its proper divisors (771940991767640).

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

542445021241240 is a wasteful number, since it uses less digits than its factorization.

542445021241240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043163502411 (or 1043163502407 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 40.

Adding to 542445021241240 its reverse (42142120544245), we get a palindrome (584587141785485).

The spelling of 542445021241240 in words is "five hundred forty-two trillion, four hundred forty-five billion, twenty-one million, two hundred forty-one thousand, two hundred forty".