1021066423254 has 48 divisors (see below), whose sum is σ = 2363505468480. Its totient is φ = 317629453680.

The previous prime is 1021066423253. The next prime is 1021066423297. The reversal of 1021066423254 is 4523246601201.

1021066423254 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 0 + 6 + 642 + 3 + 2 + 5 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021066423253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22257492 + ... + 22303319.

It is an arithmetic number, because the mean of its divisors is an integer number (49239697260).

Almost surely, 2^{1021066423254} is an apocalyptic number.

1021066423254 is an abundant number, since it is smaller than the sum of its proper divisors (1342439045226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021066423254 is a wasteful number, since it uses less digits than its factorization.

1021066423254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44560905 (or 44560902 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 1021066423254 in words is "one trillion, twenty-one billion, sixty-six million, four hundred twenty-three thousand, two hundred fifty-four".