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142352551 = 1115438387
BaseRepresentation
bin10000111110000…
…10000010100111
3100220212020222201
420133002002213
5242420240201
622043035331
73345656005
oct1037020247
9326766881
10142352551
1173399640
123b80bb47
13236520a3
1414c97a75
15c76d801
hex87c20a7

142352551 has 8 divisors (see below), whose sum is σ = 155412864. Its totient is φ = 129312120.

The previous prime is 142352513. The next prime is 142352569. The reversal of 142352551 is 155253241.

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

It is a cyclic number.

It is not a de Polignac number, because 142352551 - 27 = 142352423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142352501) 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, 12780 + ... + 21166.

It is an arithmetic number, because the mean of its divisors is an integer number (19426608).

Almost surely, 2142352551 is an apocalyptic number.

142352551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142352551 is a deficient number, since it is larger than the sum of its proper divisors (13060313).

142352551 is a wasteful number, since it uses less digits than its factorization.

142352551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9941.

The product of its digits is 6000, while the sum is 28.

The square root of 142352551 is about 11931.1588288816. The cubic root of 142352551 is about 522.1417472006.

The spelling of 142352551 in words is "one hundred forty-two million, three hundred fifty-two thousand, five hundred fifty-one".

Divisors: 1 11 1543 8387 16973 92257 12941141 142352551