542421213442 has 16 divisors (see below), whose sum is σ = 856524288960. Its totient is φ = 256915441872.

The previous prime is 542421213421. The next prime is 542421213449. The reversal of 542421213442 is 244312124245.

It is a junction number, because it is equal to n+sod(n) for n = 542421213398 and 542421213407.

It is not an unprimeable number, because it can be changed into a prime (542421213449) 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, 103278 + ... + 1046665.

It is an arithmetic number, because the mean of its divisors is an integer number (53532768060).

Almost surely, 2^542421213442 is an apocalyptic number.

542421213442 is a deficient number, since it is larger than the sum of its proper divisors (314103075518).

542421213442 is a wasteful number, since it uses less digits than its factorization.

542421213442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162377.

The product of its digits is 61440, while the sum is 34.

Adding to 542421213442 its reverse (244312124245), we get a palindrome (786733337687).

The spelling of 542421213442 in words is "five hundred forty-two billion, four hundred twenty-one million, two hundred thirteen thousand, four hundred forty-two".