101402440 has 32 divisors (see below), whose sum is σ = 229320000. Its totient is φ = 40353984.

The previous prime is 101402419. The next prime is 101402443. The reversal of 101402440 is 44204101.

It is not an unprimeable number, because it can be changed into a prime (101402443) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1591 + ... + 14329.

It is an arithmetic number, because the mean of its divisors is an integer number (7166250).

Almost surely, 2^101402440 is an apocalyptic number.

101402440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101402440 is an abundant number, since it is smaller than the sum of its proper divisors (127917560).

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

101402440 is a wasteful number, since it uses less digits than its factorization.

101402440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12949 (or 12945 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 101402440 is about 10069.8778542741. The cubic root of 101402440 is about 466.3186679956.

Adding to 101402440 its reverse (44204101), we get a palindrome (145606541).

The spelling of 101402440 in words is "one hundred one million, four hundred two thousand, four hundred forty".