1245438 has 12 divisors (see below), whose sum is σ = 2698488. Its totient is φ = 415140.

The previous prime is 1245421. The next prime is 1245449. The reversal of 1245438 is 8345421.

It is a super-2 number, since 2×1245438² = 3102231623688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34578 + ... + 34613.

It is an arithmetic number, because the mean of its divisors is an integer number (224874).

2^1245438 is an apocalyptic number.

1245438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1245438 is an abundant number, since it is smaller than the sum of its proper divisors (1453050).

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

1245438 is a wasteful number, since it uses less digits than its factorization.

1245438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69199 (or 69196 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 1245438 is about 1115.9919354547. The cubic root of 1245438 is about 107.5905276737.

The spelling of 1245438 in words is "one million, two hundred forty-five thousand, four hundred thirty-eight".