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42412640 = 255265079
BaseRepresentation
bin1010000111001…
…0101001100000
32221210210012112
42201302221200
541324201030
64113014452
71023334004
oct241625140
987723175
1042412640
1121a39276
1212254428
138a2ca4a
1458c0704
153acba95
hex2872a60

42412640 has 24 divisors (see below), whose sum is σ = 100200240. Its totient is φ = 16964992.

The previous prime is 42412633. The next prime is 42412649. The reversal of 42412640 is 4621424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42412649) 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, 132380 + ... + 132699.

It is an arithmetic number, because the mean of its divisors is an integer number (4175010).

Almost surely, 242412640 is an apocalyptic number.

42412640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42412640 is an abundant number, since it is smaller than the sum of its proper divisors (57787600).

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

42412640 is a wasteful number, since it uses less digits than its factorization.

42412640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265094 (or 265086 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 42412640 is about 6512.4987523991. The cubic root of 42412640 is about 348.7373277685.

The spelling of 42412640 in words is "forty-two million, four hundred twelve thousand, six hundred forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 265079 530158 1060316 1325395 2120632 2650790 4241264 5301580 8482528 10603160 21206320 42412640