1620142301 has 4 divisors (see below), whose sum is σ = 1647602400. Its totient is φ = 1592682204.

The previous prime is 1620142289. The next prime is 1620142309. The reversal of 1620142301 is 1032410261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1620142301 is a prime.

It is a super-2 number, since 2×1620142301² = 5249722150979149202, 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 (1620142309) 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, 13729961 + ... + 13730078.

It is an arithmetic number, because the mean of its divisors is an integer number (411900600).

Almost surely, 2^1620142301 is an apocalyptic number.

It is an amenable number.

1620142301 is a deficient number, since it is larger than the sum of its proper divisors (27460099).

1620142301 is an equidigital number, since it uses as much as digits as its factorization.

1620142301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27460098.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1620142301 is about 40250.9913045629. The cubic root of 1620142301 is about 1174.4946795895.

Adding to 1620142301 its reverse (1032410261), we get a palindrome (2652552562).

The spelling of 1620142301 in words is "one billion, six hundred twenty million, one hundred forty-two thousand, three hundred one".