1212438 has 16 divisors (see below), whose sum is σ = 2435760. Its totient is φ = 402336.

The previous prime is 1212437. The next prime is 1212439. The reversal of 1212438 is 8342121.

It is an interprime number because it is at equal distance from previous prime (1212437) and next prime (1212439).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212433) 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, 2128 + ... + 2636.

It is an arithmetic number, because the mean of its divisors is an integer number (152235).

2^1212438 is an apocalyptic number.

1212438 is an abundant number, since it is smaller than the sum of its proper divisors (1223322).

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

1212438 is a wasteful number, since it uses less digits than its factorization.

1212438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911.

The product of its digits is 384, while the sum is 21.

The square root of 1212438 is about 1101.1076241676. The cubic root of 1212438 is about 106.6317442101.

Adding to 1212438 its reverse (8342121), we get a palindrome (9554559).

The spelling of 1212438 in words is "one million, two hundred twelve thousand, four hundred thirty-eight".