1401542988 has 12 divisors (see below), whose sum is σ = 3270267000. Its totient is φ = 467180992.

The previous prime is 1401542957. The next prime is 1401543023. The reversal of 1401542988 is 8892451041.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58397613 + ... + 58397636.

It is an arithmetic number, because the mean of its divisors is an integer number (272522250).

Almost surely, 2^1401542988 is an apocalyptic number.

It is an amenable number.

1401542988 is an abundant number, since it is smaller than the sum of its proper divisors (1868724012).

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

1401542988 is a wasteful number, since it uses less digits than its factorization.

1401542988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116795256 (or 116795254 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 1401542988 is about 37437.1872340858. The cubic root of 1401542988 is about 1119.0997730008.

The spelling of 1401542988 in words is "one billion, four hundred one million, five hundred forty-two thousand, nine hundred eighty-eight".