1020142401 has 4 divisors (see below), whose sum is σ = 1360189872. Its totient is φ = 680094932.

The previous prime is 1020142399. The next prime is 1020142411. The reversal of 1020142401 is 1042410201.

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 not a de Polignac number, because 1020142401 - 2¹ = 1020142399 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1020142411) 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, 170023731 + ... + 170023736.

It is an arithmetic number, because the mean of its divisors is an integer number (340047468).

Almost surely, 2^1020142401 is an apocalyptic number.

It is an amenable number.

1020142401 is a deficient number, since it is larger than the sum of its proper divisors (340047471).

1020142401 is an equidigital number, since it uses as much as digits as its factorization.

1020142401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340047470.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1020142401 is about 31939.6681416699. The cubic root of 1020142401 is about 1006.6695518511.

Adding to 1020142401 its reverse (1042410201), we get a palindrome (2062552602).

The spelling of 1020142401 in words is "one billion, twenty million, one hundred forty-two thousand, four hundred one".