1021240092 has 12 divisors (see below), whose sum is σ = 2382893576. Its totient is φ = 340413360.

The previous prime is 1021240091. The next prime is 1021240109. The reversal of 1021240092 is 2900421201.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021240091) 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, 42551659 + ... + 42551682.

Almost surely, 2^1021240092 is an apocalyptic number.

1021240092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021240092 is an abundant number, since it is smaller than the sum of its proper divisors (1361653484).

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

1021240092 is a wasteful number, since it uses less digits than its factorization.

1021240092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85103348 (or 85103346 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1021240092 is about 31956.8473413758. The cubic root of 1021240092 is about 1007.0304870843.

Adding to 1021240092 its reverse (2900421201), we get a palindrome (3921661293).

The spelling of 1021240092 in words is "one billion, twenty-one million, two hundred forty thousand, ninety-two".