1406542806 has 32 divisors (see below), whose sum is σ = 3164248800. Its totient is φ = 468846144.

The previous prime is 1406542789. The next prime is 1406542829. The reversal of 1406542806 is 6082456041.

It is a super-2 number, since 2×1406542806² = 3956725330220707272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156411 + ... + 165158.

It is an arithmetic number, because the mean of its divisors is an integer number (98882775).

Almost surely, 2^1406542806 is an apocalyptic number.

1406542806 is an abundant number, since it is smaller than the sum of its proper divisors (1757705994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1406542806 is an frugal number, since it uses more digits than its factorization.

1406542806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321592 (or 321574 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 1406542806 is about 37503.9038767966. The cubic root of 1406542806 is about 1120.4289401881.

Adding to 1406542806 its reverse (6082456041), we get a palindrome (7488998847).

The spelling of 1406542806 in words is "one billion, four hundred six million, five hundred forty-two thousand, eight hundred six".