1212877474 has 4 divisors (see below), whose sum is σ = 1819316214. Its totient is φ = 606438736.

The previous prime is 1212877459. The next prime is 1212877481. The reversal of 1212877474 is 4747782121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 763140625 + 449736849 = 27625^2 + 21207^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1212877474.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303219367 + ... + 303219370.

Almost surely, 2^1212877474 is an apocalyptic number.

1212877474 is a deficient number, since it is larger than the sum of its proper divisors (606438740).

1212877474 is an equidigital number, since it uses as much as digits as its factorization.

1212877474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606438739.

The product of its digits is 175616, while the sum is 43.

The square root of 1212877474 is about 34826.3904819319. The cubic root of 1212877474 is about 1066.4462630335.

The spelling of 1212877474 in words is "one billion, two hundred twelve million, eight hundred seventy-seven thousand, four hundred seventy-four".