1021654423 has 4 divisors (see below), whose sum is σ = 1081751760. Its totient is φ = 961557088.

The previous prime is 1021654399. The next prime is 1021654433. The reversal of 1021654423 is 3244561201.

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

It is a cyclic number.

It is not a de Polignac number, because 1021654423 - 2¹³ = 1021646231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021654391 and 1021654400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021654433) 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, 30048643 + ... + 30048676.

It is an arithmetic number, because the mean of its divisors is an integer number (270437940).

Almost surely, 2^1021654423 is an apocalyptic number.

1021654423 is a deficient number, since it is larger than the sum of its proper divisors (60097337).

1021654423 is an equidigital number, since it uses as much as digits as its factorization.

1021654423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60097336.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1021654423 is about 31963.3293478636. The cubic root of 1021654423 is about 1007.1666573272.

The spelling of 1021654423 in words is "one billion, twenty-one million, six hundred fifty-four thousand, four hundred twenty-three".