1420891715 has 8 divisors (see below), whose sum is σ = 1705795200. Its totient is φ = 1136229952.

The previous prime is 1420891711. The next prime is 1420891741. The reversal of 1420891715 is 5171980241.

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

It is a cyclic number.

It is not a de Polignac number, because 1420891715 - 2² = 1420891711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1420891711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47234 + ... + 71223.

It is an arithmetic number, because the mean of its divisors is an integer number (213224400).

Almost surely, 2^1420891715 is an apocalyptic number.

1420891715 is a deficient number, since it is larger than the sum of its proper divisors (284903485).

1420891715 is a wasteful number, since it uses less digits than its factorization.

1420891715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120861.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 1420891715 is about 37694.7173354570. The cubic root of 1420891715 is about 1124.2260922638.

The spelling of 1420891715 in words is "one billion, four hundred twenty million, eight hundred ninety-one thousand, seven hundred fifteen".