1420203432401 has 4 divisors (see below), whose sum is σ = 1529449850292. Its totient is φ = 1310957014512.

The previous prime is 1420203432391. The next prime is 1420203432451. The reversal of 1420203432401 is 1042343020241.

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

It can be written as a sum of positive squares in 2 ways, for example, as 65658937600 + 1354544494801 = 256240^2 + 1163849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420203432401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1420203432451) 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, 54623208926 + ... + 54623208951.

It is an arithmetic number, because the mean of its divisors is an integer number (382362462573).

Almost surely, 2^{1420203432401} is an apocalyptic number.

It is an amenable number.

1420203432401 is a deficient number, since it is larger than the sum of its proper divisors (109246417891).

1420203432401 is a wasteful number, since it uses less digits than its factorization.

1420203432401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109246417890.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1420203432401 its reverse (1042343020241), we get a palindrome (2462546452642).

The spelling of 1420203432401 in words is "one trillion, four hundred twenty billion, two hundred three million, four hundred thirty-two thousand, four hundred one".