1420794731 has 2 divisors, whose sum is σ = 1420794732. Its totient is φ = 1420794730.

The previous prime is 1420794719. The next prime is 1420794761. The reversal of 1420794731 is 1374970241.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1420794731 - 2¹⁰ = 1420793707 is a prime.

It is a super-4 number, since 4×1420794731⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1420794701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710397365 + 710397366.

It is an arithmetic number, because the mean of its divisors is an integer number (710397366).

Almost surely, 2^1420794731 is an apocalyptic number.

1420794731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420794731 is an equidigital number, since it uses as much as digits as its factorization.

1420794731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 1420794731 is about 37693.4308732967. The cubic root of 1420794731 is about 1124.2005133913.

The spelling of 1420794731 in words is "one billion, four hundred twenty million, seven hundred ninety-four thousand, seven hundred thirty-one".