1401433245 has 28 divisors (see below), whose sum is σ = 2521432956. Its totient is φ = 747429120.

The previous prime is 1401433237. The next prime is 1401433247. The reversal of 1401433245 is 5423341041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1104698169 + 296735076 = 33237^2 + 17226^2 .

It is not a de Polignac number, because 1401433245 - 2³ = 1401433237 is a prime.

It is a super-3 number, since 3×1401433245³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401433247) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 188596 + ... + 195885.

It is an arithmetic number, because the mean of its divisors is an integer number (90051177).

Almost surely, 2^1401433245 is an apocalyptic number.

1401433245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1401433245 is a deficient number, since it is larger than the sum of its proper divisors (1119999711).

1401433245 is an frugal number, since it uses more digits than its factorization.

1401433245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384504 (or 384489 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1401433245 is about 37435.7215103436. The cubic root of 1401433245 is about 1119.0705631530.

Adding to 1401433245 its reverse (5423341041), we get a palindrome (6824774286).

The spelling of 1401433245 in words is "one billion, four hundred one million, four hundred thirty-three thousand, two hundred forty-five".