1212505342 has 16 divisors (see below), whose sum is σ = 1888945920. Its totient is φ = 583294168.

The previous prime is 1212505339. The next prime is 1212505363. The reversal of 1212505342 is 2435052121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103768 + ... + 114859.

It is an arithmetic number, because the mean of its divisors is an integer number (118059120).

Almost surely, 2^1212505342 is an apocalyptic number.

1212505342 is a deficient number, since it is larger than the sum of its proper divisors (676440578).

1212505342 is a wasteful number, since it uses less digits than its factorization.

1212505342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218735.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1212505342 is about 34821.0473995255. The cubic root of 1212505342 is about 1066.3371837616.

Adding to 1212505342 its reverse (2435052121), we get a palindrome (3647557463).

The spelling of 1212505342 in words is "one billion, two hundred twelve million, five hundred five thousand, three hundred forty-two".