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157642 = 2232149
BaseRepresentation
bin100110011111001010
322000020121
4212133022
520021032
63213454
71224412
oct463712
9260217
10157642
11a8491
127728a
13569a4
1441642
1531a97
hex267ca

157642 has 12 divisors (see below), whose sum is σ = 248850. Its totient is φ = 74888.

The previous prime is 157639. The next prime is 157649. The reversal of 157642 is 246751.

It can be written as a sum of positive squares in only one way, i.e., 152881 + 4761 = 391^2 + 69^2 .

It is a pancake number, because a pancake can be divided into 157642 parts by 561 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (157649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 984 + ... + 1132.

2157642 is an apocalyptic number.

157642 is a deficient number, since it is larger than the sum of its proper divisors (91208).

157642 is a wasteful number, since it uses less digits than its factorization.

157642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 174 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 157642 is about 397.0415595375. The cubic root of 157642 is about 54.0203398458.

The spelling of 157642 in words is "one hundred fifty-seven thousand, six hundred forty-two".

Divisors: 1 2 23 46 149 298 529 1058 3427 6854 78821 157642