153742 has 4 divisors (see below), whose sum is σ = 230616. Its totient is φ = 76870.

The previous prime is 153739. The next prime is 153743. The reversal of 153742 is 247351.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38434 + ... + 38437.

It is an arithmetic number, because the mean of its divisors is an integer number (57654).

2¹⁵³⁷⁴² is an apocalyptic number.

153742 is a deficient number, since it is larger than the sum of its proper divisors (76874).

153742 is an equidigital number, since it uses as much as digits as its factorization.

153742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76873.

The product of its digits is 840, while the sum is 22.

The square root of 153742 is about 392.0994771738. The cubic root of 153742 is about 53.5711343053.

It can be divided in two parts, 15374 and 2, that added together give a square (15376 = 124²).

The spelling of 153742 in words is "one hundred fifty-three thousand, seven hundred forty-two".