3421397742 has 16 divisors (see below), whose sum is σ = 7820337792. Its totient is φ = 977542200.

The previous prime is 3421397741. The next prime is 3421397743. The reversal of 3421397742 is 2477931243.

It is an interprime number because it is at equal distance from previous prime (3421397741) and next prime (3421397743).

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 81461851 = 3421397742 / (3 + 4 + 2 + 1 + 3 + 9 + 7 + 7 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 3421397694 and 3421397703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3421397741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40730884 + ... + 40730967.

It is an arithmetic number, because the mean of its divisors is an integer number (488771112).

Almost surely, 2^3421397742 is an apocalyptic number.

3421397742 is an abundant number, since it is smaller than the sum of its proper divisors (4398940050).

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

3421397742 is a wasteful number, since it uses less digits than its factorization.

3421397742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81461863.

The product of its digits is 254016, while the sum is 42.

The square root of 3421397742 is about 58492.7152900256. The cubic root of 3421397742 is about 1506.8424790813.

The spelling of 3421397742 in words is "three billion, four hundred twenty-one million, three hundred ninety-seven thousand, seven hundred forty-two".