1242221030142 has 32 divisors (see below), whose sum is σ = 2618387752320. Its totient is φ = 391802487840.

The previous prime is 1242221030087. The next prime is 1242221030143. The reversal of 1242221030142 is 2410301222421.

It is a super-2 number, since 2×1242221030142² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242221030143) 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, 6542628 + ... + 6729815.

It is an arithmetic number, because the mean of its divisors is an integer number (81824617260).

Almost surely, 2^{1242221030142} is an apocalyptic number.

1242221030142 is an abundant number, since it is smaller than the sum of its proper divisors (1376166722178).

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

1242221030142 is a wasteful number, since it uses less digits than its factorization.

1242221030142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13273288.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1242221030142 its reverse (2410301222421), we get a palindrome (3652522252563).

The spelling of 1242221030142 in words is "one trillion, two hundred forty-two billion, two hundred twenty-one million, thirty thousand, one hundred forty-two".