1401451145 has 4 divisors (see below), whose sum is σ = 1681741380. Its totient is φ = 1121160912.

The previous prime is 1401451133. The next prime is 1401451159. The reversal of 1401451145 is 5411541041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5411541041 = 11467 ⋅471923.

It can be written as a sum of positive squares in 2 ways, for example, as 732297721 + 669153424 = 27061^2 + 25868^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401451145 - 2¹⁴ = 1401434761 is a prime.

It is a super-2 number, since 2×1401451145² = 3928130623643622050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140145110 + ... + 140145119.

It is an arithmetic number, because the mean of its divisors is an integer number (420435345).

Almost surely, 2^1401451145 is an apocalyptic number.

It is an amenable number.

1401451145 is a deficient number, since it is larger than the sum of its proper divisors (280290235).

1401451145 is an equidigital number, since it uses as much as digits as its factorization.

1401451145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280290234.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 1401451145 is about 37435.9605860461. The cubic root of 1401451145 is about 1119.0753276272.

Adding to 1401451145 its reverse (5411541041), we get a palindrome (6812992186).

The spelling of 1401451145 in words is "one billion, four hundred one million, four hundred fifty-one thousand, one hundred forty-five".