1000401534 has 24 divisors (see below), whose sum is σ = 2364585912. Its totient is φ = 303151920.

The previous prime is 1000401503. The next prime is 1000401539. The reversal of 1000401534 is 4351040001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000401539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2526069 + ... + 2526464.

It is an arithmetic number, because the mean of its divisors is an integer number (98524413).

Almost surely, 2^1000401534 is an apocalyptic number.

1000401534 is an abundant number, since it is smaller than the sum of its proper divisors (1364184378).

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

1000401534 is a wasteful number, since it uses less digits than its factorization.

1000401534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5052552 (or 5052549 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1000401534 is about 31629.1247744859. The cubic root of 1000401534 is about 1000.1338267563.

Adding to 1000401534 its reverse (4351040001), we get a palindrome (5351441535).

The spelling of 1000401534 in words is "one billion, four hundred one thousand, five hundred thirty-four".