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142162212090 = 23520117235559
BaseRepresentation
bin1000010001100110000…
…1110011010011111010
3111120221112021122010110
42010121201303103322
54312122011241330
6145150341325150
713161624602433
oct2043141632372
9446845248113
10142162212090
1155321954088
1223675a067b6
1310537822932
146c4887048a
153a70976db0
hex21198734fa

142162212090 has 32 divisors (see below), whose sum is σ = 341207717760. Its totient is φ = 37907877824.

The previous prime is 142162212061. The next prime is 142162212103. The reversal of 142162212090 is 90212261241.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 485731 + ... + 721289.

It is an arithmetic number, because the mean of its divisors is an integer number (10662741180).

Almost surely, 2142162212090 is an apocalyptic number.

142162212090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142162212090 is an abundant number, since it is smaller than the sum of its proper divisors (199045505670).

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

142162212090 is a wasteful number, since it uses less digits than its factorization.

142162212090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255686.

The product of its (nonzero) digits is 3456, while the sum is 30.

The spelling of 142162212090 in words is "one hundred forty-two billion, one hundred sixty-two million, two hundred twelve thousand, ninety".

Divisors: 1 2 3 5 6 10 15 30 20117 40234 60351 100585 120702 201170 235559 301755 471118 603510 706677 1177795 1413354 2355590 3533385 7066770 4738740403 9477480806 14216221209 23693702015 28432442418 47387404030 71081106045 142162212090