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142972754 = 2174205081
BaseRepresentation
bin10001000010110…
…01011101010010
3100222000202202012
420201121131102
5243100112004
622104222522
73354151121
oct1041313522
9328022665
10142972754
1173782601
123ba6aa42
132380b482
1414db9ab8
15c84246e
hex8859752

142972754 has 8 divisors (see below), whose sum is σ = 227074428. Its totient is φ = 67281280.

The previous prime is 142972727. The next prime is 142972757. The reversal of 142972754 is 457279241.

It can be written as a sum of positive squares in 2 ways, for example, as 142444225 + 528529 = 11935^2 + 727^2 .

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

It is not an unprimeable number, because it can be changed into a prime (142972757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2102507 + ... + 2102574.

Almost surely, 2142972754 is an apocalyptic number.

142972754 is a deficient number, since it is larger than the sum of its proper divisors (84101674).

142972754 is a wasteful number, since it uses less digits than its factorization.

142972754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205100.

The product of its digits is 141120, while the sum is 41.

The square root of 142972754 is about 11957.1214763420. The cubic root of 142972754 is about 522.8989393891.

The spelling of 142972754 in words is "one hundred forty-two million, nine hundred seventy-two thousand, seven hundred fifty-four".

Divisors: 1 2 17 34 4205081 8410162 71486377 142972754