1213455135442 has 32 divisors (see below), whose sum is σ = 2039049345024. Its totient is φ = 536902329600.

The previous prime is 1213455135419. The next prime is 1213455135469. The reversal of 1213455135442 is 2445315543121.

It is a junction number, because it is equal to n+sod(n) for n = 1213455135395 and 1213455135404.

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, 3949159 + ... + 4245322.

It is an arithmetic number, because the mean of its divisors is an integer number (63720292032).

Almost surely, 2^{1213455135442} is an apocalyptic number.

1213455135442 is a deficient number, since it is larger than the sum of its proper divisors (825594209582).

1213455135442 is a wasteful number, since it uses less digits than its factorization.

1213455135442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8194674.

The product of its digits is 288000, while the sum is 40.

The spelling of 1213455135442 in words is "one trillion, two hundred thirteen billion, four hundred fifty-five million, one hundred thirty-five thousand, four hundred forty-two".