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142331902 = 2130354617
BaseRepresentation
bin10000111101111…
…00111111111110
3100220211012122221
420132330333332
5242414110102
622042355554
73345541546
oct1036747776
9326735587
10142331902
1173385079
123b7bbbba
132364587b
1414c90326
15c767637
hex87bcffe

142331902 has 8 divisors (see below), whose sum is σ = 213665616. Its totient is φ = 71110032.

The previous prime is 142331899. The next prime is 142331911. The reversal of 142331902 is 209133241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24703 + ... + 29914.

It is an arithmetic number, because the mean of its divisors is an integer number (26708202).

Almost surely, 2142331902 is an apocalyptic number.

142331902 is a deficient number, since it is larger than the sum of its proper divisors (71333714).

142331902 is a wasteful number, since it uses less digits than its factorization.

142331902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55922.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 142331902 is about 11930.2934582516. The cubic root of 142331902 is about 522.1164994941.

The spelling of 142331902 in words is "one hundred forty-two million, three hundred thirty-one thousand, nine hundred two".

Divisors: 1 2 1303 2606 54617 109234 71165951 142331902