742690 has 32 divisors (see below), whose sum is σ = 1496880. Its totient is φ = 263424.

The previous prime is 742681. The next prime is 742697. The reversal of 742690 is 96247.

It can be written as a sum of positive squares in 8 ways, for example, as 421201 + 321489 = 649^2 + 567^2 .

It is a super-2 number, since 2×742690² = 1103176872200, which contains 22 as substring.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (742697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3672 + ... + 3868.

2⁷⁴²⁶⁹⁰ is an apocalyptic number.

742690 is an abundant number, since it is smaller than the sum of its proper divisors (754190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

742690 is a wasteful number, since it uses less digits than its factorization.

742690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 742690 is about 861.7946391107. The cubic root of 742690 is about 90.5598842588.

The spelling of 742690 in words is "seven hundred forty-two thousand, six hundred ninety".