1421266436 has 48 divisors (see below), whose sum is σ = 2676058560. Its totient is φ = 658099200.

The previous prime is 1421266433. The next prime is 1421266447. The reversal of 1421266436 is 6346621241.

It is a junction number, because it is equal to n+sod(n) for n = 1421266396 and 1421266405.

It is not an unprimeable number, because it can be changed into a prime (1421266433) 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, 2364536 + ... + 2365136.

It is an arithmetic number, because the mean of its divisors is an integer number (55751220).

Almost surely, 2^1421266436 is an apocalyptic number.

It is an amenable number.

1421266436 is a deficient number, since it is larger than the sum of its proper divisors (1254792124).

1421266436 is a wasteful number, since it uses less digits than its factorization.

1421266436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124 (or 1122 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 1421266436 is about 37699.6874788107. The cubic root of 1421266436 is about 1124.3249114521.

Adding to 1421266436 its reverse (6346621241), we get a palindrome (7767887677).

The spelling of 1421266436 in words is "one billion, four hundred twenty-one million, two hundred sixty-six thousand, four hundred thirty-six".