1021457094 has 96 divisors (see below), whose sum is σ = 2486453760. Its totient is φ = 273487104.

The previous prime is 1021457069. The next prime is 1021457141. The reversal of 1021457094 is 4907541201.

It is a happy number.

1021457094 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9371112 + ... + 9371220.

It is an arithmetic number, because the mean of its divisors is an integer number (25900560).

Almost surely, 2^1021457094 is an apocalyptic number.

1021457094 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021457094, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1243226880).

1021457094 is an abundant number, since it is smaller than the sum of its proper divisors (1464996666).

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

1021457094 is a wasteful number, since it uses less digits than its factorization.

1021457094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 1021457094 is about 31960.2423958267. The cubic root of 1021457094 is about 1007.1018095726.

Adding to 1021457094 its reverse (4907541201), we get a palindrome (5928998295).

The spelling of 1021457094 in words is "one billion, twenty-one million, four hundred fifty-seven thousand, ninety-four".