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120400082 = 2112497521
BaseRepresentation
bin1110010110100…
…10100011010010
322101112221212022
413023102203102
5221310300312
615540331442
72661245435
oct713224322
9271487768
10120400082
1161a65400
12343a3b82
131bc3706a
1411dc181c
15a884172
hex72d28d2

120400082 has 12 divisors (see below), whose sum is σ = 198511278. Its totient is φ = 54727200.

The previous prime is 120400081. The next prime is 120400117. The reversal of 120400082 is 280004021.

It can be written as a sum of positive squares in only one way, i.e., 107143201 + 13256881 = 10351^2 + 3641^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 120400082.

It is not an unprimeable number, because it can be changed into a prime (120400081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 248519 + ... + 249002.

Almost surely, 2120400082 is an apocalyptic number.

120400082 is a deficient number, since it is larger than the sum of its proper divisors (78111196).

120400082 is a wasteful number, since it uses less digits than its factorization.

120400082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497545 (or 497534 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 120400082 is about 10972.6971160239. The cubic root of 120400082 is about 493.7899662783.

The spelling of 120400082 in words is "one hundred twenty million, four hundred thousand, eighty-two".