101402405 has 8 divisors (see below), whose sum is σ = 131043192. Its totient is φ = 74881728.

The previous prime is 101402387. The next prime is 101402419. The reversal of 101402405 is 504204101.

It can be written as a sum of positive squares in 4 ways, for example, as 24542116 + 76860289 = 4954^2 + 8767^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101402405 - 2⁶ = 101402341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779954 + ... + 780083.

It is an arithmetic number, because the mean of its divisors is an integer number (16380399).

Almost surely, 2^101402405 is an apocalyptic number.

It is an amenable number.

101402405 is a deficient number, since it is larger than the sum of its proper divisors (29640787).

101402405 is a wasteful number, since it uses less digits than its factorization.

101402405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560055.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 101402405 is about 10069.8761164177. The cubic root of 101402405 is about 466.3186143441.

Adding to 101402405 its reverse (504204101), we get a palindrome (605606506).

The spelling of 101402405 in words is "one hundred one million, four hundred two thousand, four hundred five".