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142695620 = 22517419693
BaseRepresentation
bin10001000000101…
…01110011000100
3100221111200120222
420200111303010
5243012224440
622054243512
73351615134
oct1040256304
9327450528
10142695620
1173603371
123b956598
13237422a2
1414d46ac4
15c7da2b5
hex8815cc4

142695620 has 24 divisors (see below), whose sum is σ = 317288664. Its totient is φ = 53720576.

The previous prime is 142695617. The next prime is 142695659. The reversal of 142695620 is 26596241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 56280004 + 86415616 = 7502^2 + 9296^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209507 + ... + 210186.

It is an arithmetic number, because the mean of its divisors is an integer number (13220361).

Almost surely, 2142695620 is an apocalyptic number.

142695620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142695620 is an abundant number, since it is smaller than the sum of its proper divisors (174593044).

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

142695620 is a wasteful number, since it uses less digits than its factorization.

142695620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419719 (or 419717 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 142695620 is about 11945.5271964028. The cubic root of 142695620 is about 522.5608637692.

The spelling of 142695620 in words is "one hundred forty-two million, six hundred ninety-five thousand, six hundred twenty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 419693 839386 1678772 2098465 4196930 7134781 8393860 14269562 28539124 35673905 71347810 142695620