1421008685 has 8 divisors (see below), whose sum is σ = 1721147616. Its totient is φ = 1126182160.

The previous prime is 1421008663. The next prime is 1421008711. The reversal of 1421008685 is 5868001241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1421008685 - 2⁸ = 1421008429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1327511 + ... + 1328580.

It is an arithmetic number, because the mean of its divisors is an integer number (215143452).

Almost surely, 2^1421008685 is an apocalyptic number.

It is an amenable number.

1421008685 is a deficient number, since it is larger than the sum of its proper divisors (300138931).

1421008685 is a wasteful number, since it uses less digits than its factorization.

1421008685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656203.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 1421008685 is about 37696.2688471949. The cubic root of 1421008685 is about 1124.2569407599.

The spelling of 1421008685 in words is "one billion, four hundred twenty-one million, eight thousand, six hundred eighty-five".