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120030023 = 132190863
BaseRepresentation
bin1110010011110…
…00001101000111
322100212011020102
413021320031013
5221211430043
615524354315
72655144521
oct711701507
9270764212
10120030023
1161832373
123424599b
131bb377a9
1411d26a11
15a80e6b8
hex7278347

120030023 has 4 divisors (see below), whose sum is σ = 120122208. Its totient is φ = 119937840.

The previous prime is 120030019. The next prime is 120030041. The reversal of 120030023 is 320030021.

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 120030023 - 22 = 120030019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120029986 and 120030013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120036023) 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, 44111 + ... + 46752.

It is an arithmetic number, because the mean of its divisors is an integer number (30030552).

Almost surely, 2120030023 is an apocalyptic number.

120030023 is a deficient number, since it is larger than the sum of its proper divisors (92185).

120030023 is an equidigital number, since it uses as much as digits as its factorization.

120030023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92184.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 120030023 is about 10955.8214205964. The cubic root of 120030023 is about 493.2835464833.

Adding to 120030023 its reverse (320030021), we get a palindrome (440060044).

The spelling of 120030023 in words is "one hundred twenty million, thirty thousand, twenty-three".

Divisors: 1 1321 90863 120030023