1420378471 has 4 divisors (see below), whose sum is σ = 1427588712. Its totient is φ = 1413168232.

The previous prime is 1420378423. The next prime is 1420378481. The reversal of 1420378471 is 1748730241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1420378471 - 2¹³ = 1420370279 is a prime.

It is a super-3 number, since 3×1420378471³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1420378471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420378481) 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, 3604825 + ... + 3605218.

It is an arithmetic number, because the mean of its divisors is an integer number (356897178).

Almost surely, 2^1420378471 is an apocalyptic number.

1420378471 is a deficient number, since it is larger than the sum of its proper divisors (7210241).

1420378471 is an equidigital number, since it uses as much as digits as its factorization.

1420378471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7210240.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 1420378471 is about 37687.9088170198. The cubic root of 1420378471 is about 1124.0907144167.

The spelling of 1420378471 in words is "one billion, four hundred twenty million, three hundred seventy-eight thousand, four hundred seventy-one".