742487 has 4 divisors (see below), whose sum is σ = 768120. Its totient is φ = 716856.

The previous prime is 742457. The next prime is 742499. The reversal of 742487 is 784247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784247 = 29 ⋅27043.

It is a cyclic number.

It is not a de Polignac number, because 742487 - 2¹² = 738391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12773 + ... + 12830.

It is an arithmetic number, because the mean of its divisors is an integer number (192030).

2⁷⁴²⁴⁸⁷ is an apocalyptic number.

742487 is a deficient number, since it is larger than the sum of its proper divisors (25633).

742487 is a wasteful number, since it uses less digits than its factorization.

742487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25632.

The product of its digits is 12544, while the sum is 32.

The square root of 742487 is about 861.6768535826. The cubic root of 742487 is about 90.5516325739.

The spelling of 742487 in words is "seven hundred forty-two thousand, four hundred eighty-seven".