1213420461 has 16 divisors (see below), whose sum is σ = 1808025408. Its totient is φ = 717468800.

The previous prime is 1213420421. The next prime is 1213420519. The reversal of 1213420461 is 1640243121.

It is a cyclic number.

It is not a de Polignac number, because 1213420461 - 2⁷ = 1213420333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213420421) 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, 447066 + ... + 449771.

It is an arithmetic number, because the mean of its divisors is an integer number (113001588).

Almost surely, 2^1213420461 is an apocalyptic number.

1213420461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1213420461 is a deficient number, since it is larger than the sum of its proper divisors (594604947).

1213420461 is a wasteful number, since it uses less digits than its factorization.

1213420461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896892.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1213420461 is about 34834.1852351968. The cubic root of 1213420461 is about 1066.6053832738.

Adding to 1213420461 its reverse (1640243121), we get a palindrome (2853663582).

The spelling of 1213420461 in words is "one billion, two hundred thirteen million, four hundred twenty thousand, four hundred sixty-one".