742380 has 24 divisors (see below), whose sum is σ = 2078832. Its totient is φ = 197952.

The previous prime is 742369. The next prime is 742381. The reversal of 742380 is 83247.

It is a super-2 number, since 2×742380² = 1102256128800, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 742380.

It is not an unprimeable number, because it can be changed into a prime (742381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6127 + ... + 6246.

It is an arithmetic number, because the mean of its divisors is an integer number (86618).

2⁷⁴²³⁸⁰ is an apocalyptic number.

It is an amenable number.

742380 is an abundant number, since it is smaller than the sum of its proper divisors (1336452).

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

742380 is a wasteful number, since it uses less digits than its factorization.

742380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12385 (or 12383 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 742380 is about 861.6147631047. The cubic root of 742380 is about 90.5472825582.

It can be divided in two parts, 7423 and 80, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 742380 in words is "seven hundred forty-two thousand, three hundred eighty".