1026142621 has 8 divisors (see below), whose sum is σ = 1173988224. Its totient is φ = 878610480.

The previous prime is 1026142609. The next prime is 1026142657. The reversal of 1026142621 is 1262416201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1026142621 - 2¹⁷ = 1026011549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1024142621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71305 + ... + 84478.

It is an arithmetic number, because the mean of its divisors is an integer number (146748528).

Almost surely, 2^1026142621 is an apocalyptic number.

It is an amenable number.

1026142621 is a deficient number, since it is larger than the sum of its proper divisors (147845603).

1026142621 is an equidigital number, since it uses as much as digits as its factorization.

1026142621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156731.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1026142621 is about 32033.4609588162. The cubic root of 1026142621 is about 1008.6393536263.

Adding to 1026142621 its reverse (1262416201), we get a palindrome (2288558822).

The spelling of 1026142621 in words is "one billion, twenty-six million, one hundred forty-two thousand, six hundred twenty-one".