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42474025 = 5211219739
BaseRepresentation
bin1010001000000…
…1101000101001
32221220220102001
42202001220221
541333132100
64114211001
71024010656
oct242015051
987826361
1042474025
1121a80400
1212283a61
138a51979
1458d8c2d
153aded6a
hex2881a29

42474025 has 36 divisors (see below), whose sum is σ = 61020400. Its totient is φ = 29224800.

The previous prime is 42474023. The next prime is 42474049. The reversal of 42474025 is 52047424.

It is a happy number.

It is not a de Polignac number, because 42474025 - 21 = 42474023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42473984 and 42474002.

It is not an unprimeable number, because it can be changed into a prime (42474023) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 57106 + ... + 57844.

Almost surely, 242474025 is an apocalyptic number.

It is an amenable number.

42474025 is a deficient number, since it is larger than the sum of its proper divisors (18546375).

42474025 is a wasteful number, since it uses less digits than its factorization.

42474025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 42474025 is about 6517.2099091559. The cubic root of 42474025 is about 348.9054924272.

The spelling of 42474025 in words is "forty-two million, four hundred seventy-four thousand, twenty-five".

Divisors: 1 5 11 19 25 55 95 121 209 275 475 605 739 1045 2299 3025 3695 5225 8129 11495 14041 18475 40645 57475 70205 89419 154451 203225 351025 447095 772255 1698961 2235475 3861275 8494805 42474025