1010402001 has 36 divisors (see below), whose sum is σ = 1700909184. Its totient is φ = 576298800.

The previous prime is 1010401999. The next prime is 1010402011. The reversal of 1010402001 is 1002040101.

It is a happy number.

It is not a de Polignac number, because 1010402001 - 2¹ = 1010401999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1010402011) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 276456 + ... + 280086.

Almost surely, 2^1010402001 is an apocalyptic number.

It is an amenable number.

1010402001 is a deficient number, since it is larger than the sum of its proper divisors (690507183).

1010402001 is a wasteful number, since it uses less digits than its factorization.

1010402001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4282 (or 4272 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1010402001 is about 31786.8211842581. The cubic root of 1010402001 is about 1003.4553802619.

Adding to 1010402001 its reverse (1002040101), we get a palindrome (2012442102).

It can be divided in two parts, 101040 and 2001, that added together give a square (103041 = 321²).

The spelling of 1010402001 in words is "one billion, ten million, four hundred two thousand, one".