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157426 = 278713
BaseRepresentation
bin100110011011110010
321222221121
4212123302
520014201
63212454
71223653
oct463362
9258847
10157426
11a8305
127712a
1356869
144152a
15319a1
hex266f2

157426 has 4 divisors (see below), whose sum is σ = 236142. Its totient is φ = 78712.

The previous prime is 157411. The next prime is 157427. The reversal of 157426 is 624751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 624751 = 5910589.

It can be written as a sum of positive squares in only one way, i.e., 123201 + 34225 = 351^2 + 185^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 157426.

It is not an unprimeable number, because it can be changed into a prime (157427) by changing a digit.

157426 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39355 + ... + 39358.

2157426 is an apocalyptic number.

157426 is a deficient number, since it is larger than the sum of its proper divisors (78716).

157426 is an equidigital number, since it uses as much as digits as its factorization.

157426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78715.

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

The square root of 157426 is about 396.7694544695. The cubic root of 157426 is about 53.9956558005.

It can be divided in two parts, 1574 and 26, that added together give a square (1600 = 402).

The spelling of 157426 in words is "one hundred fifty-seven thousand, four hundred twenty-six".

Divisors: 1 2 78713 157426