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42400148 = 2271514291
BaseRepresentation
bin1010000110111…
…1100110010100
32221210011001212
42201233212110
541323301043
64112440552
71023252410
oct241574624
987704055
1042400148
1121a2a94a
1212249158
138a2715b
1458b9d40
153ac8018
hex286f994

42400148 has 12 divisors (see below), whose sum is σ = 84800352. Its totient is φ = 18171480.

The previous prime is 42400139. The next prime is 42400177. The reversal of 42400148 is 84100424.

42400148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

42400148 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 757118 + ... + 757173.

It is an arithmetic number, because the mean of its divisors is an integer number (7066696).

Almost surely, 242400148 is an apocalyptic number.

It is an amenable number.

42400148 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.

42400148 is a wasteful number, since it uses less digits than its factorization.

42400148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514302 (or 1514300 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 42400148 is about 6511.5396028896. The cubic root of 42400148 is about 348.7030859758.

The spelling of 42400148 in words is "forty-two million, four hundred thousand, one hundred forty-eight".

Divisors: 1 2 4 7 14 28 1514291 3028582 6057164 10600037 21200074 42400148