1258740 has 144 divisors (see below), whose sum is σ = 4647552. Its totient is φ = 279936.

The previous prime is 1258723. The next prime is 1258753. The reversal of 1258740 is 478521.

1258740 is nontrivially palindromic in base 8.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 34002 + ... + 34038.

2^1258740 is an apocalyptic number.

1258740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1258740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2323776).

1258740 is an abundant number, since it is smaller than the sum of its proper divisors (3388812).

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

1258740 is a wasteful number, since it uses less digits than its factorization.

1258740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 1258740 is about 1121.9358270418. The cubic root of 1258740 is about 107.9722150747.

The spelling of 1258740 in words is "one million, two hundred fifty-eight thousand, seven hundred forty".