1420742783 has 4 divisors (see below), whose sum is σ = 1455395088. Its totient is φ = 1386090480.

The previous prime is 1420742779. The next prime is 1420742831. The reversal of 1420742783 is 3872470241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3872470241 = 1021 ⋅3792821.

It is a cyclic number.

It is not a de Polignac number, because 1420742783 - 2² = 1420742779 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420742723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17326091 + ... + 17326172.

It is an arithmetic number, because the mean of its divisors is an integer number (363848772).

Almost surely, 2^1420742783 is an apocalyptic number.

1420742783 is a deficient number, since it is larger than the sum of its proper divisors (34652305).

1420742783 is an equidigital number, since it uses as much as digits as its factorization.

1420742783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34652304.

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 1420742783 is about 37692.7417814093. The cubic root of 1420742783 is about 1124.1868119797.

The spelling of 1420742783 in words is "one billion, four hundred twenty million, seven hundred forty-two thousand, seven hundred eighty-three".