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10021243142 = 25010621571
BaseRepresentation
bin10010101010101000…
…00000100100000110
3221212101201220020102
421111110000210012
5131010414240032
64334222004102
7503223106211
oct112524004406
927771656212
1010021243142
114282804329
121b38116632
13c39217691
146b0cd2778
153d9ba7362
hex255500906

10021243142 has 4 divisors (see below), whose sum is σ = 15031864716. Its totient is φ = 5010621570.

The previous prime is 10021243081. The next prime is 10021243151. The reversal of 10021243142 is 24134212001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24134212001 = 109221414789.

It is a super-2 number, since 2×100212431422 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2505310784 + ... + 2505310787.

It is an arithmetic number, because the mean of its divisors is an integer number (3757966179).

Almost surely, 210021243142 is an apocalyptic number.

10021243142 is a deficient number, since it is larger than the sum of its proper divisors (5010621574).

10021243142 is an equidigital number, since it uses as much as digits as its factorization.

10021243142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5010621573.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 10021243142 its reverse (24134212001), we get a palindrome (34155455143).

The spelling of 10021243142 in words is "ten billion, twenty-one million, two hundred forty-three thousand, one hundred forty-two".

Divisors: 1 2 5010621571 10021243142