1254540 has 96 divisors (see below), whose sum is σ = 4193280. Its totient is φ = 274176.

The previous prime is 1254529. The next prime is 1254541. The reversal of 1254540 is 454521.

It is a super-2 number, since 2×1254540² = 3147741223200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12129 + ... + 12231.

It is an arithmetic number, because the mean of its divisors is an integer number (43680).

2^1254540 is an apocalyptic number.

1254540 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 1254540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2096640).

1254540 is an abundant number, since it is smaller than the sum of its proper divisors (2938740).

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

1254540 is a wasteful number, since it uses less digits than its factorization.

1254540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 1254540 is about 1120.0624982562. The cubic root of 1254540 is about 107.8519920434.

It can be divided in two parts, 1 and 254540, that added together give a triangular number (254541 = T₇₁₃).

The spelling of 1254540 in words is "one million, two hundred fifty-four thousand, five hundred forty".