1521143226242 has 32 divisors (see below), whose sum is σ = 2365070400000. Its totient is φ = 732891672576.

The previous prime is 1521143226079. The next prime is 1521143226277. The reversal of 1521143226242 is 2426223411251.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70415759 + ... + 70437357.

It is an arithmetic number, because the mean of its divisors is an integer number (73908450000).

Almost surely, 2^{1521143226242} is an apocalyptic number.

1521143226242 is a deficient number, since it is larger than the sum of its proper divisors (843927173758).

1521143226242 is a wasteful number, since it uses less digits than its factorization.

1521143226242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23978.

The product of its digits is 46080, while the sum is 35.

Adding to 1521143226242 its reverse (2426223411251), we get a palindrome (3947366637493).

The spelling of 1521143226242 in words is "one trillion, five hundred twenty-one billion, one hundred forty-three million, two hundred twenty-six thousand, two hundred forty-two".