1421012345 has 16 divisors (see below), whose sum is σ = 1738782720. Its totient is φ = 1114535424.

The previous prime is 1421012339. The next prime is 1421012347. The reversal of 1421012345 is 5432101241.

It is a cyclic number.

It is not a de Polignac number, because 1421012345 - 2¹² = 1421008249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1421012345.

It is not an unprimeable number, because it can be changed into a prime (1421012347) 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, 106697 + ... + 119273.

It is an arithmetic number, because the mean of its divisors is an integer number (108673920).

Almost surely, 2^1421012345 is an apocalyptic number.

It is an amenable number.

1421012345 is a deficient number, since it is larger than the sum of its proper divisors (317770375).

1421012345 is a wasteful number, since it uses less digits than its factorization.

1421012345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13024.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1421012345 is about 37696.3173930823. The cubic root of 1421012345 is about 1124.2579059843.

Adding to 1421012345 its reverse (5432101241), we get a palindrome (6853113586).

The spelling of 1421012345 in words is "one billion, four hundred twenty-one million, twelve thousand, three hundred forty-five".