1213341402542 has 8 divisors (see below), whose sum is σ = 1915802214600. Its totient is φ = 574740664344.

The previous prime is 1213341402527. The next prime is 1213341402547. The reversal of 1213341402542 is 2452041433121.

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

It is a super-3 number, since 3×1213341402542³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1213341402499 and 1213341402508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213341402547) 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, 15965018417 + ... + 15965018492.

It is an arithmetic number, because the mean of its divisors is an integer number (239475276825).

Almost surely, 2^{1213341402542} is an apocalyptic number.

1213341402542 is a deficient number, since it is larger than the sum of its proper divisors (702460812058).

1213341402542 is a wasteful number, since it uses less digits than its factorization.

1213341402542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31930036930.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 1213341402542 its reverse (2452041433121), we get a palindrome (3665382835663).

The spelling of 1213341402542 in words is "one trillion, two hundred thirteen billion, three hundred forty-one million, four hundred two thousand, five hundred forty-two".