742537 has 2 divisors, whose sum is σ = 742538. Its totient is φ = 742536.

The previous prime is 742531. The next prime is 742541. The reversal of 742537 is 735247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 732736 + 9801 = 856^2 + 99^2 .

It is an emirp because it is prime and its reverse (735247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 742537 - 2⁷ = 742409 is a prime.

It is a super-2 number, since 2×742537² = 1102722392738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (742531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371268 + 371269.

It is an arithmetic number, because the mean of its divisors is an integer number (371269).

2⁷⁴²⁵³⁷ is an apocalyptic number.

It is an amenable number.

742537 is a deficient number, since it is larger than the sum of its proper divisors (1).

742537 is an equidigital number, since it uses as much as digits as its factorization.

742537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5880, while the sum is 28.

The square root of 742537 is about 861.7058662908. The cubic root of 742537 is about 90.5536651482.

The spelling of 742537 in words is "seven hundred forty-two thousand, five hundred thirty-seven".