1401254540 has 48 divisors (see below), whose sum is σ = 3445049664. Its totient is φ = 468710400.

The previous prime is 1401254527. The next prime is 1401254573. The reversal of 1401254540 is 454521041.

It is a super-2 number, since 2×1401254540² = 3927028571741223200, which contains 22 as substring.

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, 116321 + ... + 127800.

It is an arithmetic number, because the mean of its divisors is an integer number (71771868).

Almost surely, 2^1401254540 is an apocalyptic number.

1401254540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401254540 is an abundant number, since it is smaller than the sum of its proper divisors (2043795124).

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

1401254540 is a wasteful number, since it uses less digits than its factorization.

1401254540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244178 (or 244176 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1401254540 is about 37433.3346096764. The cubic root of 1401254540 is about 1119.0229947067.

Adding to 1401254540 its reverse (454521041), we get a palindrome (1855775581).

The spelling of 1401254540 in words is "one billion, four hundred one million, two hundred fifty-four thousand, five hundred forty".