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120220949 = 128393703
BaseRepresentation
bin1110010101001…
…10110100010101
322101012212010202
413022212310111
5221234032244
615532430245
72656601252
oct712466425
9271185122
10120220949
1161952862
1234318385
131bba3674
1411d76429
15a84b04e
hex72a6d15

120220949 has 4 divisors (see below), whose sum is σ = 120315936. Its totient is φ = 120125964.

The previous prime is 120220943. The next prime is 120220973. The reversal of 120220949 is 949022021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120220949 - 28 = 120220693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120220943) 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, 45569 + ... + 48134.

It is an arithmetic number, because the mean of its divisors is an integer number (30078984).

Almost surely, 2120220949 is an apocalyptic number.

It is an amenable number.

120220949 is a deficient number, since it is larger than the sum of its proper divisors (94987).

120220949 is an equidigital number, since it uses as much as digits as its factorization.

120220949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94986.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 120220949 is about 10964.5314081360. The cubic root of 120220949 is about 493.5449554206.

The spelling of 120220949 in words is "one hundred twenty million, two hundred twenty thousand, nine hundred forty-nine".

Divisors: 1 1283 93703 120220949