1212904 has 48 divisors (see below), whose sum is σ = 2872800. Its totient is φ = 469920.

The previous prime is 1212889. The next prime is 1212907. The reversal of 1212904 is 4092121.

1212904 = T₃₂₁ + T₃₂₂ + ... + T₃₄₂.

It is a super-2 number, since 2×1212904² = 2942272226432, which contains 22 as substring.

It is an Ulam number.

It is a pancake number, because a pancake can be divided into 1212904 parts by 1557 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (1212907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6687 + ... + 6865.

It is an arithmetic number, because the mean of its divisors is an integer number (59850).

2^1212904 is an apocalyptic number.

1212904 is a gapful number since it is divisible by the number (14) 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 1212904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1436400).

1212904 is an abundant number, since it is smaller than the sum of its proper divisors (1659896).

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

1212904 is a wasteful number, since it uses less digits than its factorization.

1212904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1212904 is about 1101.3192089490. The cubic root of 1212904 is about 106.6454037478.

It can be divided in two parts, 1212 and 904, that added together give a square (2116 = 46²).

The spelling of 1212904 in words is "one million, two hundred twelve thousand, nine hundred four".