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122980542 = 2320496757
BaseRepresentation
bin1110101010010…
…00100010111110
322120102001120220
413111020202332
5222440334132
620111522210
73022213566
oct725104276
9276361526
10122980542
1163468113
1235229366
131c62b769
1412493da6
15abe3a2c
hex75488be

122980542 has 8 divisors (see below), whose sum is σ = 245961096. Its totient is φ = 40993512.

The previous prime is 122980537. The next prime is 122980549. The reversal of 122980542 is 245089221.

It is a sphenic number, since it is the product of 3 distinct primes.

122980542 is an admirable number.

It is a super-2 number, since 2×1229805422 = 30248427421227528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122980549) 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, 10248373 + ... + 10248384.

It is an arithmetic number, because the mean of its divisors is an integer number (30745137).

Almost surely, 2122980542 is an apocalyptic number.

122980542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

122980542 is a wasteful number, since it uses less digits than its factorization.

122980542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20496762.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 122980542 is about 11089.6592373256. The cubic root of 122980542 is about 497.2927574648.

The spelling of 122980542 in words is "one hundred twenty-two million, nine hundred eighty thousand, five hundred forty-two".

Divisors: 1 2 3 6 20496757 40993514 61490271 122980542