1011401252 has 12 divisors (see below), whose sum is σ = 1782686640. Its totient is φ = 502062216.

The previous prime is 1011401239. The next prime is 1011401263. The reversal of 1011401252 is 2521041101.

It is a self number, because there is not a number n which added to its sum of digits gives 1011401252.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 908978 + ... + 910089.

It is an arithmetic number, because the mean of its divisors is an integer number (148557220).

Almost surely, 2^1011401252 is an apocalyptic number.

It is an amenable number.

1011401252 is a deficient number, since it is larger than the sum of its proper divisors (771285388).

1011401252 is a wasteful number, since it uses less digits than its factorization.

1011401252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819210 (or 1819208 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1011401252 is about 31802.5353077392. The cubic root of 1011401252 is about 1003.7860649553.

Adding to 1011401252 its reverse (2521041101), we get a palindrome (3532442353).

The spelling of 1011401252 in words is "one billion, eleven million, four hundred one thousand, two hundred fifty-two".