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2120223042 = 232722403881
BaseRepresentation
bin111111001100000…
…0000100101000010
312110202120111020100
41332120000211002
513320234114132
6550215423230
7103353412200
oct17630004502
95422514210
102120223042
119988a0a53
124b2084b16
1327a34b962
14161832070
15c620e37c
hex7e600942

2120223042 has 36 divisors (see below), whose sum is σ = 5343829686. Its totient is φ = 605777760.

The previous prime is 2120222957. The next prime is 2120223047. The reversal of 2120223042 is 2403220212.

It can be written as a sum of positive squares in only one way, i.e., 1494672921 + 625550121 = 38661^2 + 25011^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2120223047) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1201059 + ... + 1202822.

Almost surely, 22120223042 is an apocalyptic number.

2120223042 is an abundant number, since it is smaller than the sum of its proper divisors (3223606644).

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

2120223042 is a wasteful number, since it uses less digits than its factorization.

2120223042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403903 (or 2403893 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2120223042 is about 46045.8797505271. The cubic root of 2120223042 is about 1284.6767075185.

Adding to 2120223042 its reverse (2403220212), we get a palindrome (4523443254).

It can be divided in two parts, 21202 and 23042, that added together give a palindrome (44244).

The spelling of 2120223042 in words is "two billion, one hundred twenty million, two hundred twenty-three thousand, forty-two".