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2042221031 = 3755195163
BaseRepresentation
bin111100110111001…
…1101000111100111
312021022210120120222
41321232131013213
513140302033111
6534351514555
7101415410114
oct17156350747
95238716528
102042221031
11958864984
1248bb28a5b
1326713ab16
1415532990b
15be4527db
hex79b9d1e7

2042221031 has 4 divisors (see below), whose sum is σ = 2097416232. Its totient is φ = 1987025832.

The previous prime is 2042220953. The next prime is 2042221043. The reversal of 2042221031 is 1301222402.

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 2042221031 - 218 = 2041958887 is a prime.

It is a super-2 number, since 2×20422210312 = 8341333478917405922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042221331) 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, 27597545 + ... + 27597618.

It is an arithmetic number, because the mean of its divisors is an integer number (524354058).

Almost surely, 22042221031 is an apocalyptic number.

2042221031 is a deficient number, since it is larger than the sum of its proper divisors (55195201).

2042221031 is an equidigital number, since it uses as much as digits as its factorization.

2042221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55195200.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2042221031 is about 45190.9397003426. The cubic root of 2042221031 is about 1268.7252447595.

Adding to 2042221031 its reverse (1301222402), we get a palindrome (3343443433).

The spelling of 2042221031 in words is "two billion, forty-two million, two hundred twenty-one thousand, thirty-one".

Divisors: 1 37 55195163 2042221031