1421611607 has 24 divisors (see below), whose sum is σ = 1564825680. Its totient is φ = 1290781440.

The previous prime is 1421611601. The next prime is 1421611643. The reversal of 1421611607 is 7061161241.

It is not a de Polignac number, because 1421611607 - 2⁴ = 1421611591 is a prime.

It is a super-2 number, since 2×1421611607² = 4041959122314244898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1421611607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421611601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3475619 + ... + 3476027.

It is an arithmetic number, because the mean of its divisors is an integer number (65201070).

Almost surely, 2^1421611607 is an apocalyptic number.

1421611607 is a deficient number, since it is larger than the sum of its proper divisors (143214073).

1421611607 is a wasteful number, since it uses less digits than its factorization.

1421611607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723 (or 710 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1421611607 is about 37704.2651035662. The cubic root of 1421611607 is about 1124.4159225231.

Adding to 1421611607 its reverse (7061161241), we get a palindrome (8482772848).

The spelling of 1421611607 in words is "one billion, four hundred twenty-one million, six hundred eleven thousand, six hundred seven".