1601420143 has 4 divisors (see below), whose sum is σ = 1635492960. Its totient is φ = 1567347328.

The previous prime is 1601420137. The next prime is 1601420173. The reversal of 1601420143 is 3410241061.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1601420143 is a prime.

It is a super-2 number, since 2×1601420143² = 5129092948812280898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601420113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17036338 + ... + 17036431.

It is an arithmetic number, because the mean of its divisors is an integer number (408873240).

Almost surely, 2^1601420143 is an apocalyptic number.

1601420143 is a deficient number, since it is larger than the sum of its proper divisors (34072817).

1601420143 is an equidigital number, since it uses as much as digits as its factorization.

1601420143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34072816.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1601420143 is about 40017.7478501727. The cubic root of 1601420143 is about 1169.9530365643.

The spelling of 1601420143 in words is "one billion, six hundred one million, four hundred twenty thousand, one hundred forty-three".