1404123402 has 64 divisors (see below), whose sum is σ = 3149051904. Its totient is φ = 413735040.

The previous prime is 1404123401. The next prime is 1404123431. The reversal of 1404123402 is 2043214041.

It is not an unprimeable number, because it can be changed into a prime (1404123401) 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, 504238 + ... + 507014.

It is an arithmetic number, because the mean of its divisors is an integer number (49203936).

Almost surely, 2^1404123402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1404123402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1574525952).

1404123402 is an abundant number, since it is smaller than the sum of its proper divisors (1744928502).

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

1404123402 is a wasteful number, since it uses less digits than its factorization.

1404123402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1404123402 is about 37471.6346320787. The cubic root of 1404123402 is about 1119.7861523050.

Adding to 1404123402 its reverse (2043214041), we get a palindrome (3447337443).

The spelling of 1404123402 in words is "one billion, four hundred four million, one hundred twenty-three thousand, four hundred two".