1951402 has 4 divisors (see below), whose sum is σ = 2927106. Its totient is φ = 975700.

The previous prime is 1951321. The next prime is 1951403. The reversal of 1951402 is 2041591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2041591 = 73 ⋅27967.

It can be written as a sum of positive squares in only one way, i.e., 1121481 + 829921 = 1059^2 + 911^2 .

It is not an unprimeable number, because it can be changed into a prime (1951403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487849 + ... + 487852.

2^1951402 is an apocalyptic number.

1951402 is a deficient number, since it is larger than the sum of its proper divisors (975704).

1951402 is an equidigital number, since it uses as much as digits as its factorization.

1951402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975703.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1951402 is about 1396.9259107054. The cubic root of 1951402 is about 124.9632318526.

Adding to 1951402 its reverse (2041591), we get a palindrome (3992993).

The spelling of 1951402 in words is "one million, nine hundred fifty-one thousand, four hundred two".