1400123120 has 80 divisors (see below), whose sum is σ = 3604376448. Its totient is φ = 501515520.

The previous prime is 1400123119. The next prime is 1400123171. The reversal of 1400123120 is 213210041.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1400123095 and 1400123104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47087 + ... + 70833.

Almost surely, 2^1400123120 is an apocalyptic number.

1400123120 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 1400123120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1802188224).

1400123120 is an abundant number, since it is smaller than the sum of its proper divisors (2204253328).

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

1400123120 is a wasteful number, since it uses less digits than its factorization.

1400123120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23838 (or 23832 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1400123120 is about 37418.2190917740. The cubic root of 1400123120 is about 1118.7217346874.

Adding to 1400123120 its reverse (213210041), we get a palindrome (1613333161).

The spelling of 1400123120 in words is "one billion, four hundred million, one hundred twenty-three thousand, one hundred twenty".