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142992971302 = 21918251206179
BaseRepresentation
bin1000010100101100001…
…0111001011000100110
3111200002102111120112011
42011023002321120212
54320322200040202
6145405015344434
713221333126106
oct2051302713046
9450072446464
10142992971302
1155708893845
122386808211a
131063a98522c
146cc6d25206
153abd877bd7
hex214b0b9626

142992971302 has 16 divisors (see below), whose sum is σ = 225791841600. Its totient is φ = 67729473000.

The previous prime is 142992971299. The next prime is 142992971309. The reversal of 142992971302 is 203179299241.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142992971309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 590449 + ... + 796627.

It is an arithmetic number, because the mean of its divisors is an integer number (14111990100).

Almost surely, 2142992971302 is an apocalyptic number.

142992971302 is a deficient number, since it is larger than the sum of its proper divisors (82798870298).

142992971302 is a wasteful number, since it uses less digits than its factorization.

142992971302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224451.

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 142992971302 in words is "one hundred forty-two billion, nine hundred ninety-two million, nine hundred seventy-one thousand, three hundred two".

Divisors: 1 2 19 38 18251 36502 206179 346769 412358 693538 3917401 7834802 3762972929 7525945858 71496485651 142992971302