742451 has 4 divisors (see below), whose sum is σ = 749904. Its totient is φ = 735000.

The previous prime is 742439. The next prime is 742457. The reversal of 742451 is 154247.

742451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742451 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (742457) 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, 3575 + ... + 3776.

It is an arithmetic number, because the mean of its divisors is an integer number (187476).

2⁷⁴²⁴⁵¹ is an apocalyptic number.

742451 is a deficient number, since it is larger than the sum of its proper divisors (7453).

742451 is a wasteful number, since it uses less digits than its factorization.

742451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7452.

The product of its digits is 1120, while the sum is 23.

The square root of 742451 is about 861.6559638278. The cubic root of 742451 is about 90.5501690639.

Adding to 742451 its reverse (154247), we get a palindrome (896698).

The spelling of 742451 in words is "seven hundred forty-two thousand, four hundred fifty-one".