120401045400 has 192 divisors, whose sum is σ = 377036716320. Its totient is φ = 31782297600.

The previous prime is 120401045377. The next prime is 120401045411. The reversal of 120401045400 is 4540104021.

It is a happy number.

It is a super-2 number, since 2×120401045400² (a number of 23 digits) 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 47 ways as a sum of consecutive naturals, for example, 25013394 + ... + 25018206.

Almost surely, 2^120401045400 is an apocalyptic number.

120401045400 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 120401045400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188518358160).

120401045400 is an abundant number, since it is smaller than the sum of its proper divisors (256635670920).

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

120401045400 is a wasteful number, since it uses less digits than its factorization.

120401045400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5246 (or 5237 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 120401045400 its reverse (4540104021), we get a palindrome (124941149421).

The spelling of 120401045400 in words is "one hundred twenty billion, four hundred one million, forty-five thousand, four hundred".