1400142544 has 10 divisors (see below), whose sum is σ = 2712776210. Its totient is φ = 700071264.

The previous prime is 1400142473. The next prime is 1400142563. The reversal of 1400142544 is 4452410041.

It can be written as a sum of positive squares in only one way, i.e., 1353356944 + 46785600 = 36788^2 + 6840^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43754439 + ... + 43754470.

It is an arithmetic number, because the mean of its divisors is an integer number (271277621).

Almost surely, 2^1400142544 is an apocalyptic number.

It is an amenable number.

1400142544 is a deficient number, since it is larger than the sum of its proper divisors (1312633666).

1400142544 is an equidigital number, since it uses as much as digits as its factorization.

1400142544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87508917 (or 87508911 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 1400142544 is about 37418.4786435793. The cubic root of 1400142544 is about 1118.7269080302.

Adding to 1400142544 its reverse (4452410041), we get a palindrome (5852552585).

The spelling of 1400142544 in words is "one billion, four hundred million, one hundred forty-two thousand, five hundred forty-four".